When you're so fucking drunk, that "drunk" is no longer sufficient in describing your state of belligerence. People who are "ShitPiss Wasted" can often be found on the floor in a small lake of their own vomit and/or faecal matter and/or urine (hence "ShitPiss" Wasted), or unconsciously dancing with fucking hoodrat dirt squirrels while darting their bumholes.
Yeah, he's ShitPiss Wasted
When you slap a woman until she is knocked out then pee inside her frontside until the piss starts to come out of her backside.
yeah dude, i totally just reverse shitpissed her
Dirty Shitpiss go grade up this parking lot! Fuckfacen can't.
Man 1: Hey look bob tommy just ripped a shitpiss
Man 2. Holy shitpiss that's awesome