When you hook up with a chick and unconsciously rail her ass from behind and when you pull out she shits your bed. Basically a Shit-Storm just struck your bed with a fury.
I took my car in for service and got screwed so bad I took it out on my girl and she pulled a Barr Bed Shitter on me. . .
the questionable mental faculties of people that for whatever reason, act as if they are completely insane. A derivative of the term "batshit crazy" More often referring to females than males