You guys are horrible! But I've done better. XD My sophmore year in high school, I told my group of friends that my mom said I was no longer aloud to hang around them because she knew family members of theirs and said that I didn't need to be hanging around them anymore. They all threw a fit, I was giggling. Thankfully I didn't lose my friends that day. XD Don't talk to them anymore seeing as we're out of high school now, but it was still hilarious.
This year, my friends, my fiancee, and I were all just too lazy to actually think of pranks... Yeah.. we're that awesome. We make people think we're going to prank them and then do nothing. Best prank to do, honestly. Just make people wait and anticipate. You'd never believe how parinoid people get after so long. Then just finish it off with a *GLOMP!* and your day is complete. ^_^