A cold, wet, soggy, decaying food substance. Usually describing forgotten food left in the back of the refrigerator or pantry.
After finding the crapnasty leftover salad in the back of the refrigerator, I knew where the fruit flies were coming from.
Dude you've got crapnasty pizza in here from two months ago! Clean the fridge!
2. the shit
1. "Dang, Juli! Those brownies you made were crap-nasty!"
2. Boone: "So what did you think about that new club?"
Scout: "Well, I didn't care for the go-go dancers, but the music was freaking crap-nasty!"
act of shitting your pants so bad that it goes everywhere and gets on everything
1) oh shit guys, i just went crap-nasty all over myself