When you look at a guys mouth and He has a slight underbite with a puckered lip, and you know the way his voice is going to sound before he speaks.
Bitch, look at him he got gay mouth.
by Twittergay93 April 13, 2020
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A mouth, typically on a male, that appears a dick can enter it. It can be identified via a clean, plump, maintained, pouty set of lips.
Wow, Look at Dylan’s gay mouth! I never noticed how nice his lips are!
by Madmersteve November 24, 2019
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1) The effect of drinking sugary drinks such as non-diet sodas. The sugar creates a sticky residue in your mouth.

2) A non-diet soda
Stop drinking that goddamn gay mouth!
by the_writer_side June 22, 2004
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