Top definition
The shape your mouth makes when it's go a cock in it; a cock sucker. A phrase commonly heard on the Bubba the Love Sponge Show - Sirius satellite radio on Howard 101.
That guy was such a jerk that he should be a candidate for round mouth of the day.

Hey man, why are you trying to fag me out all the time. You're such a round mouth.
by Roundy February 22, 2008
Get a round mouth mug for your dad James.
Jul 2 Word of the Day
Someone people turn to when they're sad who makes them feel better.
Dude, I was so unhappy about my girl, until I spoke to my serotonin donor who really helped me feel better
by jonfurstn1 November 27, 2009
Get the serotonin donor neck gaiter and mug.
2
a male that gives oral sex to other men.homosexual,fag
They are bunch of roundmouths
by aks March 20, 2004
Get a roundmouth mug for your Facebook friend Vivek.
4
A description of feminine facial features or expressions on a man.
Hey do you know Joe? He didn't get that round mouth from eating square meals.
by Mr. Moo Bovine August 19, 2007
Get a round mouth mug for your coworker Zora.
5
noun. Term used to describe a person who sucks dick. Describes the shape of their mouth while sucking dick.
Look at Joe kissing the bosses ass.
Yeah.....he's such a round mouth.
by The Ultimate Ranger February 07, 2009
Get a Round mouth mug for your brother José.