Prank My Ride lets you easily alter photos of a friend's (or parent's) car and add fake dents, shattered glass, scratches and more.
Check out Prank My Ride.
CatFacts lets you spam your friends anonymously with endless facts about felines. The service also offers dog and sloth facts.
Check out CatFacts.
Turn Down for Webpage blasts Lil Jon's rap song "Turn Down for What" on any webpage.
Check out Turn Down for Webpage.
ShipYourEnemiesGlitter.com will send anyone a big envelope full of glitter, packaged with a folded sheet of paper for maximum spillage.
Check out Ship Your Enemies Glitter.
The "Clouds To Butts" browser extension replaces the word "cloud" with "butt" on any webpage. Install on a friend's computer for maximum confusion.
Check out Clouds to Butts.
Geocities-izer warps any site to look like a throwback Geocities web page. Perfect for #TBT.
Check out Geocities-izer.
Slacker lets you post funny replies to Slack as Mr. T, Yoda, Picard, & more. You need to be a Slack user to take advantage of this gimmick, but it's great for livening up boring office convos.
Check out Slacker.
Convince your friends you've finally learned to code! Hacker Typer replaces whatever you type with official looking computer hacker lingo.
Check out Hacker Typer.
GIF Dance Party isn't technically a prank. It's just a wacky website where you can create a virtual dance party full of GIFs. You can share your creations though, which is guaranteed to bring a laugh.
Check out GIF Dance Party.