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When a man puts his penis part way into a woman's mouth yet continues to pleasure himself manually till he shoots manchowder down her throat.
Kelly had to mouthsturbate her boss to get a promotion.
by WhiteRussian3 October 10, 2011
To pleasure one's mouth by noisily smacking and popping one's gum. Often done in public.
One should mouthsturbate in the privacy of one's home only.
by GentleReader July 10, 2008