When someone says.. you know, the n word.
Pretty self explanatory, i do not have the right to say that word for race purposes, but we have all been there when theres that one person who says the hard r.
The term most likely your mother has used to describe something , or whoever. Its a term to used when your frustrated and / or angry mainly on the highway.
Or it could mean balls of shit, but were going for the firstone.
Lucy: awe i lost my creditcard.. shitballs
Alec: mom jus screamed shitballs on the highway agian