Top Definition
During the act of fellatio, the girl allows the semen to enter her mouth during the climax, she then proceeds to spit the sizzling semen into her own vagina in hopes of impregnating herself. Success is Muching.
Morgan: girl where you get that baby from?

Lisa: I impregnated myself by Muching!!!!

Morgan: Mmm girl i gotta get me a man to much with, i love fellatio!!
by Mas Asset September 25, 2009

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