How to fool people with the You Do as I Do bar trick

For this effect we've dressed up a straight-up old school bar scam. Here's the simple presentation for the classic "you do as I do" effect: Bet a friend he can't copy everything you do.

Secret: 1. Both of you take a drink. 2. Hold your drink forward in a toast. He does the same. 3. You take a drink. So does he. 4. You toast again. He does, too. 5. You spit a mouthful of your drink back into your glass. He can’t--he’s already swallowed!