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1 definition by Zelmanator

When a person yawns, you make a fist, and thrust the fist to towards their face (thumb towards their mouth) with out hitting it, while whistling.
*Whistle is heard*

J: Haha! I just yammed nate while he was yawning!

E: Dude, stop yamming people. you douche
by Zelmanator December 01, 2007