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1.
Used awkwardly -- and ONLY awkwardly -- after something you've said to/about the opposite sex (or same, if that's how you go about) could be mistakenly taken into a flirtatious or more-than-friendly context. Replaces "but not like that" in most cases.

Basically:
"I'm completely positive towards you at the moment, but not in a way that I want to shove my crotch into your face."
Dude 1: Yo, do you like her?
Dude 2: Yeah . . . but not in the mouth.
Dude 1: What the HELL does that MEAN?
by RJF75 March 05, 2009

Words related to Not in the mouth

all homo mouth no homo not like that that's what she said