Female version of the clown mouth.
The act of a menstruating female fellating her lover, post unprotected vaginal intercourse. The resulting effect of the blow job is a red clown mouth on her.
Andy - Dude, Allison went all Bobo the Clown on me last night.

Randy - Siiiiiick. Really? I prefer to avoid my girlfriend's vagina when she is menstruating.

Andy - I know, but she really wanted the hog. I told her, "if you make a mess, you have to clean it up."
by RickyDeep March 19, 2014
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