Top definition
when a person comes up behind someone(unbeknownst to them)and rapidly slaps in a back and forth motion between their legs, reminiscent of a salmon flopping
(flop flop flop)

"FLOPPY SALMON!!!"

"Aww shit Elliott you flopped me"

"Damn straight Will"

by RachaelaM September 15, 2008
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The vengeful act of crapping on a lover's chest while they sleep.

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