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A event during sexual intercourse that a man ejaculates after only one pelvic thrust

hence the name

mono: one
stain: ejaculation
dude: was I any good
duedet: no, that was a complete monostain
by oliver (stoner 2277) February 07, 2009
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Sep 8 Word of the Day
A casual invitation / threat used by an individual that is not afraid of fucking someone up.
PAUL: I'm going to beat your ass.

JACK: Fuck around and find out, fool!
by NX STARCHILD October 16, 2020
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