a nuggy is the act of rapping your arm around the neck of someone, locking there head so they cant move. Then using the knuckles on your other hand, you digg them into there head, rubbing up and down back and forth on there head, just for the humour of there pain.
stanno- " Fuckin ger'ere now ya little shit. Fartin in our car, gunna fuckin nuggy ya, fuckin gay."