Derived from the 2 words shit and chat. A shat (verb) is the act of shiting in accompany public bathroom stalls with a pal or stranger and conversing. Sports, women, weather and simply the act of shiting are popular conversation items. Questions and concerns about dysfunctional shit and/or other body disfigurements as well as life in general are also popular among the information exchange.
During a shat, Marcus told me about his secret fetish about masturbating with a hardy potato in his ass.