Karaoke Etiquette

When I'm burning up the mic on karaoke night, what are the rules for lyrics that include the n-bomb ("nickle" henceforth)? Is there a difference between a David Allen Coe-type, "Working like a nickel every night and day," and a "West coast nickels got crazy game" rap lyric?

Assuming that the Coe is verboten, is there a difference between "all us nickles" and "all you nickles"? Maybe I should stick to Endless Love?