2 definitions by Roundy

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 23, 2008
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When receiving a blow job just prior to climaxing make some smart ass comment to get the girl sucking your cock to laugh just as you blow your load. The result will be the same as making a friend laugh while they are drinking a glass of milk - only creamier.
1. I met this really hot girl at the club last night and ended up ghosting her.

2. My girl was blowing my the other day and I told her that stupid joke of yours. It totally ghosted her.
by Roundy February 23, 2008
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