The trick I do at party is destroying beer bottles. It is a simple concept of action verses reaction but I am to stubborn to waste beer do I fill the bottle with water after the beer is emptied.

I slap the top of the bottle and the bottom of the bottle will completely blow out. If you do it wrong though you end up with a sore hand and the amount of presure it takes depends because of the style and thickness of the bottle.

As for other tricks, which I don't consider a trick but is the amount of booze I can drink with out catching a buzz.