Top definition
A game where if someone is to yawn, during the yawn a male is to stick their genitals in that persons mouth at the same time exclaming the words 'yawn bam'.
girl: "im feeling tired" -yawns-
boy: -takes penis out of trousers and sticks it in the girls mouth- "YAWN BAM"
by ameties August 31, 2010
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