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v. when your gum flies violently out of your mouth due to a sudden outburst of laughter and smacks someone square in the face.

reverse gebee is also possible but typically results in choking, or even death.
When i was little i gebee's on jake bebee. . . my bad.

Dude you just gebee's in my face, that's foul!
by professor Quinta August 23, 2006
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