Verb: to party very hard. To get fucked up on liquor, beers, weed and maybe even some yays.
Noun: someone who parties very hard, to the point where their cognitive ability is permanently impaired.
1: Person 1: What are we going to do tonight? Person 2: We're going to krell.
2: Did you see the Toothless girl who asked me to pull my dick out on the dance floor? What a krell.
When you're so high that if being high was a sport, you'd be the first overall pick.
Hey b, you jack highchel right now?
Nah b, I'm Connor McFaded.