When you solidify semen by freezing it into nugget shape, then insert it into a woman's anus, waiting for it to melt and leak out before being served to the man eating ass.
Person 1: Last night, my girl made me some tasty anal nutnuggets, it was great.
Person 2: Damn, I wish my girl would dare to do something more than feetshit.
Totally crazy, displaying very erratic behavior, completely insane.
Based on the term stirbugs from the film Caged meaning what happens to a person in solitary confinement for a very long time.
1: Any person who, in the course of giving a handjob, painfully and with great force slams into your balls on the downstroke.
2: Any person who likes and asks for the aforementioned act to be performed on them.
Dude, this total betty slid her hand down my pants at the lake last night, but when she started torquin' it, she kept slamming into my balls! Hella bad nutputter!
I went with Tom to that new bar down the street; little did I know it was an S&M joint, and he was an undercover nutputter!