Derogatory term for an individual who exudes an unsavoury stench from their mouth while speaking, laughing, and or while opening their mouth in general.
Bill's bad breath attained such a level repugnance that his coworkers now joke that he suffers from assmouthavitis.
John: Yesterday I met my girlfriend in the mall, speaking of the mall, they have discounts on dildos, speaking of dildos, I gotta buy one for my mother! Jack: What an assmouth