The Grumeau Shower is when you vomit on someone during intercourse, making your partner vomit on yourself while continuing the sexual act.
Last night I was having horrible sex with this chick. She got sick on me (from all the horror) and proceeded to violently vomit all over me.. Getting into the mood, I then Grumeau showered her right back!
by Beep12345 December 15, 2009

5 Words Related to Grumeau shower

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