20 Birthday Pranks That are Harmless Yet Fun

One of ways to make birthday more fun is to plan some birthday prank. Nothing serious just some light-hearted birthday pranks to add some laughter to the day. So I have for you 20 easy but fun birthday prank that you can try to surprise birthday person. These prank ideas are suitable for kids as well as for grow ups and perfect to make birthday more hilarious.

Birthday Pranks

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1. Bursting Cake

This one is a classic birthday prank and never gets old. Blow small balloons and tape them in the shape of a cake, then add loads of frosting to cover it all. Add a touch of cake décor like sprinkles or a topper to make it look as real as possible. When the birthday person goes to cut the cake, the knife bursts the balloon and surprises everyone in the room. This prank works perfectly for all ages, whether it is kids or grownups. Everyone will get a fright from the sudden burst and it makes for a great reaction video too.

2. Balloon Room

This is a simple birthday prank that will amaze anyone and looks visually stunning, perfect to capture on camera. Blow up lots and lots of balloons and sneak them into their bedroom or office and fill every corner of the room. When they wake up in the morning or walk into the room on their birthday they will be completely surprised and confused. This is an easy prank that is harmless and safe to try even on people you are not sure will take a prank sportingly. It is suitable for any age and works great as both a prank and a birthday decoration.

3. Confetti All Over Card or Box

Everyone loves getting a birthday card or gift so this one is easy to pull off. Take a normal looking card and stuff it generously with glitter before sealing the envelope. When they tear it open, glitter spread everywhere, on their face, their clothes, the floor and everything nearby. It is one of those pranks that keeps giving because glitter is impossible to fully clean up. It is a harmless prank suitable for friends and family who have a good sense of humor. Fair warning though, they will probably plan to get you back for this one. You can also do a gift box version. To make it easy for you just get this confetti box.

4. Fake Spilled Cake

This one is perfect for giving the birthday person a mini heart attack. Right before it is time to bring out the cake, walk in looking completely panicked and pretend you dropped it. You can place a real cake messily on the floor with a tray or freeze frosting and cake scraps on a board to make it look like a genuine disaster. Watch them go from shock to horror in seconds before you reveal the real cake. This works best with someone who is emotionally invested in their birthday cake. The more dramatic your acting the better the reaction.

5. Frozen Cereal

This one is a simple and harmless prank that is perfect for kids. The night before their birthday, pour their favorite cereal and milk into a bowl and leave it in the freezer overnight. In the morning serve it like a normal breakfast. They will sit there trying to scoop it and wonder what on earth is going on. It costs nothing and takes barely any effort but the confusion it causes is genuinely funny. Works great as a little birthday morning surprise before the real celebrations begin.

6. Invisible Ink Message

Write the birthday message or  clue to the birthday gift using invisible ink, it would like a completely blank piece of paper and the person will be confused. The birthday person would need to figure out how to read the message. When they will UV light the message would reveal. Kids will be amazed and would absolutely love this one. It makes simple birthday moment a little adventure. You can write a heartfelt message or a funny one, either way it is not easy for birthday person to read it easily. Invisible ink pens are cheap and easy to find online. You can try this invisible ink pen

7. Confetti Egg Surprise

This is a fun and festive birthday prank that works great for kids. Hollow out some eggs and fill them with colorful confetti, then hide them around the house the night before. Tell the birthday child there are surprises hidden around the house for them to find. When they crack the eggs open, confetti bursts out everywhere and the whole thing turns into a mini celebration. You can even hide a small real gift at the end of the hunt to make it extra special. It is a little messy but the kind of mess that is totally worth it.

8. What’s That Sound

This one is a slow burn prank and honestly one of the most satisfying to pull off. Hide an annoying noise maker like this cricket noise maker somewhere in their bedroom, office or car before their birthday. It makes a realistic cricket chirping sound at random intervals so they will hear it, look around, find nothing and go back to what they were doing. Then it goes off again. And again. The frustration and confusion slowly builds and it is hilarious to watch them search around trying to find the source. This prank is best suited for adults and older kids who will not get too stressed out by it. It can go on for hours if hidden well enough.

9. Mystery Gift Box

This is a fun way to drag out the gift opening moment and get the whole room involved. Wrap their actual gift in a plain box with no hints at all. Before they can open it they have to complete silly challenges or answer trivia questions about themselves to earn clues. Wrong answers mean they have to wait even longer. It turns a simple gift into a whole event and everyone watching gets entertained too. This one works for all ages and is easy to customize based on how well you know the birthday person.

10. Newspaper Headline Prank

This is a creative birthday prank that can also be kept as a birthday keepsake. Make a fake newspaper front page, mimicking exactly like newspaper. The headline can be funny, about the birthday person, something like “Local Man Turns 40, Friends Shocked He Made It” or “Woman Finally Admits She Has Too Many Houseplants.” It should be something specific to  to the person along with their photo. Print it out and add it to the newspaper and keep it casually around the birthday person. They will be surprised to find and full of laughter once they read it. It can be later framed. This prank takes a little effort but it is completely worth it.

11. Birthday Card Wall of Shame

Look for the most embarrassing photos of the birthday person, from childhood, collage, everyday life and make a collage or print them all out individually. Stick them on a wall or turn it into a birthday card or hang across “Happy Birthday” banner. It will be hilarious to revisit funny moments. The birthday person will be completely shock for a moment but will eventually have a big laugh. This prank is a great one for milestone birthdays like 30, 40 or 50.

12. Infinite Candles

Swap out their regular birthday candles for trick re-lighting candles( like these) before bringing out the cake. They blow them out and the candles come right back. They blow again and the candles come back again. Watch them huff and puff getting more and more frustrated while everyone else is in tears laughing. Let them struggle for a good while before revealing the trick. Trick candles are inexpensive and easy to find and this prank works on absolutely everyone regardless of age. Just make sure the smoke alarm is not too sensitive before you start.

13. Fake Birthday Forget

This one takes a little coordination but the payoff is huge. Get all their close friends and family on board to completely ignore their birthday for the whole day, no texts, no calls, no mentions at all. Let them go through the entire day thinking everyone forgot. Then right at the end of the day surprise them with a party or a gathering. The relief and happiness they feel makes the whole thing absolutely worth it. This prank works best on someone who is not too sensitive about their birthday and who will appreciate the effort behind the surprise at the end.

14. Gift Box Inception

This is a prank that turns the gift opening into a whole performance. Wrap their real gift in a box, then put that box inside a bigger box and wrap that one too. Keep going until you have around 8 to 10 layers of boxes each wrapped individually. Throw in some fake gifts inside a few of the layers like a single sock, a potato or a random kitchen item to keep them guessing the whole time. By the time they finally reach the real gift they will be exhausted and the whole room will be in complete chaos. This one is suitable for all ages and the more people watching the better.

15. Birthday Sponge Cake

This is a prank that looks completely convincing until the very last moment. Make a cake using actual kitchen sponges as the base layer and cover the whole thing in real frosting and decorations so it looks like a proper birthday cake. When they go to cut into it the knife drags and the texture feels completely off. The look on their face when they realize what is happening is priceless. Have a real cake ready to bring out straight after so the birthday celebration can continue. This one is great for anyone who takes their birthday cake very seriously.

16. Hard to Get Gift

Give them their birthday gift inside a difficult to open box or just prank them with prank gift a box. Best pick for this is to use this gotcha box that need to be unscrewed to open. They will spend ages trying to figure out how to open it, getting more and more frustrated with every attempt. The struggle is the whole entertainment and it works especially well on adults who absolutely refuse to ask for help. It is a unique and hilarious way to present a gift and the box itself becomes part of the fun.

17. Balloon Avalanche

Pick a door they are definitely going to open on their birthday, their bedroom door, a closet or a kitchen cabinet, and pack it completely full of balloons from floor to ceiling. The moment they open the door the entire avalanche of balloons tumbles out all over them. It is loud, chaotic and looks amazing on camera. This is a safe and harmless prank suitable for all ages and works as a fun birthday surprise as much as it does a prank. Bonus points if you hide a small gift or a note inside one of the balloons for them to find afterward.

18. Wrap Everything

Pick a room, a desk or their car and wrap absolutely everything inside it in birthday wrapping paper. Every single item, the pens, the chair, the steering wheel, the laptop, even the snacks. The more thorough you are with the wrapping the better the reaction. It takes some effort and a lot of wrapping paper but it is one of those pranks that looks incredible, makes for great photos and gets a massive reaction. This one is best suited for a close friend or family member who will appreciate the effort that went into it.

19. Gift a Funny Message

Get a voice recorder plush toy and record a funny or completely unexpected message in it before wrapping it up as a gift. Add a small sticky note that say to press and hear the message. When the birthday person will open the gift and squeeze it, they will be completely surprised to hear the funny message. You can record an inside joke, a message with inside reference that only  they will understand, or just something completely random and silly about the birthday person. It is a creative and personal prank gift that will be cherished.

20. Wrong Age on the Cake

Order extra numerical birthday candle of wrong age, mostly a higher number than their real age. Get the cake out for cutting, confidently in front of everyone with candles lit, singing and all. The birthday person will be caught by the candle number and would start to laugh once they get the joke. The more casually and genuinely you present it the better the prank turns. This prank get especially more funny when the numbers are reversed. For example if someone is turning “23” and you place the candles as “32”

Birthday Prank Ideas

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