If you are looking to get even with a friend, you might want to consider one of these sly tricks. Just make sure you don't do any serious damage, because your friendship just might be at stake!
Easter Comes Early
Buy as many plastic eggs, ping pong balls, or balloons as you can and dump them onto the floor of a car. If you're feeling generous, dump coins in their car instead.
Take the tires off a car and put it up on cinder blocks. Obviously keep the tires nearby to replace. If you can pull it off, hire a pit crew to do it in seconds! Or just leave the tires on and put the car on blocks anyway!
An exhaust whistle is a simple and cheap gag item for any car. Affix it to the exhaust pipe and wait for your friend to start their car. Party noisemakers can provide the same effect.
Stuck On You
Buy or make fake bumper stickers out of magnets, and stick them conspicuously on a friend's car. Exceptionally silly ones or those espousing views and sports teams the driver opposes are best.
Get an empty foam coffee cup, affix it to your car roof and drive around in public where plenty of people will see it, or go to a drive-thru with a cup on wires appearing to float in midair over the passenger seat.
Up To Eleven
Crank up the radio volume full-blast, turn it off and play the waiting game. Enable the windshield wipers and headlights for added effect.
Still In The Original Packaging
Get a big supply of plastic wrap or gift wrapping paper and use it to completely cover a parked car. Try to be around for the discovery so you can watch them as they unwrap it.
As an alternative to wrapping, you can cover every inch of a car with sticky notes. A dedicated prankster will coordinate the neon colors in certain patterns or write unique memos on each one.
Another quick and harmless prank involves switching out the license plate frame. As with the bumper stickers, pick frames that clash with their personality as much as possible.
A Lovely Bunch of Coconuts
Tie a bunch of tin cans or coconuts to the back of the car.
Instead of fake bumper stickers you can find decals or magnets representing dents, scratches, splatters and broken glass and affix them to the car in question.
Failure To Launch
Pop the hood and unclip the battery for a harmless way to keep the car from starting in the first place, without actually harming the car itself.
Find a convincing ticket template online, print it out and fill it in; then put on someone's windshield. To make up for the rattled nerves you might cause you can slip a gift card or coupon into the ticket.
Line a trunk with plastic to seal it securely and then fill it with water. Garnish with a rubber ducky.
The Ol' Switcheroo
Go down to the junk yard and find a wrecked version of a car down to the model, year and color. Then hide the real car around the corner and put the ruined version in its place.
The Most Annoying Sound
Devices like the Annoy-a-tron, wireless music player, or singing greeting card can be cleverly hidden in a car to harmlessly annoy the driver.
Make a fake for sale sign or online ad with a ridiculously cheap price for the car.
Only do this if you didn't actually hit the car! Apologize for hitting their car on a short note and put it on their windshield. Watch as they search the car for damage.
I Honk For Everything
Wire up a horn to the victim's brake lights or motor so that they honk every time they brake or start the car. Alternatively, you can relocate the horn to under the driver's seat so that they get the blast rather than the rest of the world.