1 definition by Amebo Jones
The resulting chocolate coloured ring that appears on the lips of the participant of an ass to mouth incident after they use their lips to clean all the feces from the shaft. Reminiscent of all of your annoying cousins after they have eaten your Oreos. The severity of cookie mouth varies with diet, shaft size, and enthusiasm and lip colour of the shaft swabber. Is somewhat contagious as kissing can spread cookie mouth between partners.
by Amebo Jones March 26, 2020