How to Make a Self-Expanding Shaving Cream Bomb Prank

Whether it's April Fool's Day or just another Monday that needs a laugh, this self-expanding shaving cream bomb prank is guaranteed to deliver the mess — and the comedy. With just a few cheap supplies, you can rig up a surprise explosion of shaving cream in someone's room, office, or right under their feet.

🎥 Watch the two videos below for inspiration — one uses a chip bag under a door, the other a balloon for maximum surprise.

What you'll need

• A can of shaving cream (any brand — foam, not gel)

• An empty chip bag or a party balloon

• Optional: tape, tacks, or string (for ceiling-drop variation)

• A heavy book or your foot (to trigger the chip bag version)

The chip bag door bomb

Perfect for roommates, coworkers, or hotel room victims.

How to do it:

1. Eat or empty a bag of chips. Wipe it dry if needed.

2. Fill the empty chip bag halfway with shaving cream.

3. Slide the bag under your target's door so that the opening is inside their room and the plump body of the bag remains just outside.

4. When you hear them approaching, stomp hard on the outer part of the bag.

5. BOOM — shaving cream will blast out the other side and all over their shoes, floor, and legs.

Pro tip:

Make it look like someone slipped a note or delivery under the door. They'll bend down to grab it … and get blasted.

The overhead balloon blast

This one's sneakier — and way messier.

How to do it:

1. Fill a party balloon as full as possible with shaving cream using a funnel or by stretching the balloon over the can's nozzle.

2. Tape or pin the balloon to the ceiling, over a couch, door, or wherever your victim will be sitting or standing.

3. Wait until the moment is right, then pop it from a distance with a tack, knife, or even by dangling a sharp object from a string.

What happens:

The balloon explodes in a foam shower, soaking your target in instant regret.

Clean-up notes

• Shaving cream is technically soap-based, so it's easy to wipe up with warm water and paper towels.

• If indoors, be mindful of electrical outlets, electronics, and carpets.

• Always prank with care — don't use this on strangers or in public spaces without permission.

When to use it

• April Fool's Day

• Birthdays

• Dorm wars

• Office shenanigans

• Just because your friend dared you