This is a video of two friends who spend all night disassembling a buddy's 1,254 piece Millennium Falcon LEGO set immediately after he finished putting it together. To their credit though, they put all the pieces in labeled bags to make it easy to reassemble. Me? I would have just beat it with a hammer and left a note that read 'NOT SORRY'. Also, dude seems pretty excited to get to put it back together again. Is it really a prank if you do something the person is going to enjoy? I feel like that's more of a surprise party. Real pranks ruin friendships and draw criminal charges.
Keep going for the video.
Thanks to greg and Themadous, who pranked a friend by cutting the brake lines on his bicycle. See? Now that's a good one.