(n) (insult) A big mouth. The owner of the tit jaw usually has a mouth that's too large, sometimes meaning they talk too much. Can also be used to mean that the person eats too much. Also used to evoke baby-like images of the person.

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)