meaning that one's penis is so large, it seems to be three penis' morphed into one super large penis. It is from the origin of "tro" meaning enormous and "penis" meaning a male's genitalia.
by Toad Crack May 22, 2012
Get the Tropenis mug.its the torpedo toy in the pool but it looks like a penis. when held underwater and let go..its fast as lighting..try it on for size! women love the torpenis in the pool
by iheartcobravenom September 10, 2008
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