All-Time Funniest, Most Legendary Prank!

Remember the video of some guy and his girlfriend at a baseball game, where his friend rigged a fake marriage proposal on the Jumbotron? Anyways the guy gets slapped by his lady when he says he doesn't want to marry her and that its fake. His friend laughs his ass off and videos the whole thing for the world to see. If you haven't seen this, then watch it here. Well its payback time for the guy that pranked his friend at an unimaginable level. The pranked becomes the pranker, in seamless act of redemption. Oh payback is sweet!