Slang originating from southern Iowa meaning to jump someone with one or more accomplices and then kicking or smushing your foot onto their
mouth/
teeth as
hard as possible as the other person(s) holds them down.
Person
1: Bro, did you hear about Jack and Haley graining Josh yesterday?
Person 2:
Yeah, I heard he
won't be able to speak normally ever again, dude.