1 definition by TTTHeeeh Juggernaut

Inserting a banana long-ways between your ass cheeks and squeezing as tightly as possible. The only successful banana buttcrunch is one that caused the inner banana to launch out the side of the peel.
OH shit son, how are you so good at doing a banana buttcrunch!?
by TTTHeeeh Juggernaut May 31, 2006
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