a derogatory term for a vagina or female, used by gay males to describe a vagina or female or by used straight men talking about a female they find unattractive or dislike.
Also can be used by females towards other girls they dislike.
"ew! i wouldn't stick my dick in that fish trap!"
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The act of trapping ones penis inside of your vagina until it falls off and dies.
Morgan was angry at Joey so she used a Mongolian Fish Trap on him.