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1.
An action involving one person joining the tips of all of their fingers together, coming up behind an unsuspecting person, and shoving their fingers up their butt while opening the hand and making an ecploding noise.
I'm going to give you an exploding mushroom if you don't cut it out!
by Brackettmaster April 03, 2006

Words related to exploding mushroom

5 finger suprise anal intrusion anal suprise butt explosion rape