An insult, typically used when angry. The word, despite the word 'nigger', has no racist connotation to it, and can be used when insulting a member of any race.
Sicilian for bastard (literally "son of a whore"), similar in idea but more pejorative than S.O.B. The sing-song (or prosody) is critical.
It sounds great when pronounced correctly, very cathartic. See that scene in Godfather 2 where DeNiro stabs the old guy who killed his mother.The old guy says it right!!
A sexual act were the male separates the womens ass checks and forcefully crams his nose all the way in and repeatedly blows his nose and shakes his head back and forth then repeats the same act with his tongue.