>One great practical joke. I wish I'd thought of it.

Ha ha. Nice one! I bet the guests were already thinking, "Methinks he doth protest too much!"

Another idea is: when leaving a bar, at least two of you pick on one of your mates, grab him by each arm, and pretend to guide him out of the bar, as if he's drunk. Make sure you stagger about from side to side, as if he's making you do it, and make a fuss to attract everyone's attention. He can't win: if he comes quietly it looks like he's out of it; if he struggles and protests he looks beligerent drunk.