Shitter slam

Shitter slam or toilet slam is a term that refers to toilet action usually involving one or more individuals, in which all of the "victims" inside said toilet (or rarely a bath) are pissing, shitting and vomiting simultaneously

pesron A: Hey Greg wtf happened to you? You look like a victim of plague or something
person B: Oh really? i haven't noticed. I simply had no time as i was having the wildest shitter slam in the morning
person A: Oh boy...