circlemouth 

the shape of the mouth as it is filled with a cock.

Chasey Lane has a great circlemouth as Peter North thrusts his large manmeat into her piehole.

circlemouth by Richard the Lionheart December 30, 2007

circle mouth-gasm 

A circle mouth-gasm is like a circle-jerk but instead of jacking off, the five or six guy get their dicks sucked and have cumgasms in the mouth of a guy on his knees beating off who swallows their thick loadsof cum.

In my Fraternity X, I always looked forward to the other dudes having circle mouth-gasms in my mouth and swallowing their creamy loads!

circle mouth-gasm by USAF Cadet October 16, 2020

Circle mouth 

Bruh it’s shaped like a circle or two semi circles.

Taylor has a circle mouth it looks like 2 semi circles put together.

Circle mouth by Poser Stan January 1, 2022