Sick-ass

It's not all right for you to cover for your sick-ass, twisted son, just because he's yours and let him tear apart a woman and her family.

Source: wiktionary

And I definitely didn't find anything that pointed towards her having any sort of an affiliation with a sick-ass killer.

Source: wiktionary

I was getting bigger for having this kid and basically homeless, and my mother hated me because her sick-ass husband thought he was in control of me.

Source: wiktionary

You really are one sick-ass, crazy motherfucker.

Source: wiktionary