Verb.
“Slinging a Nasty” is a term originating in North Carolina so far as I can tell. It is hillbilly redneck English.
To “sling a nasty” means to slide a race car on a dirt track or otherwise drive a car wide open on a dirt road.
Uses:
“Sling a nasty”
“Slung a nasty”
“Slinging a nasty”
I’s standin there in the yard and heard something going “Wahhhhhhh” and next thang I knew Janie in her Buick done run by the house here, throttle hung right wide open, and there she went bout slinging a nasty around that next curve up yonder.