Rip-shit

Rip-shit, rip shit, or ripshit. Not ripped shit, ripshits, or ripping shits.

Someone who is (or more commonly, who will be) super mad, to the point of getting belligerent. So pissed off, that they will "rip" some "shit" up in an angry rage.

Oh no! I took my dad's 1997 Pontiac Grand Prix out for a joyride and crashed it! He's gonna be so rip-shit when he finds out.

You crashed my 1997 Pontiac Grand Prix!? I am fucking ripshit right now.