Expletives are not acceptable behavior on meta or any other Stack Exchange site. If you can't effectively communicate what you need to say without resorting to lowest common denominator cursing, then keep it to yourself.
If you use expletives, you will get a warning.
If you continue to use expletives, you will be placed on timed suspension.
Does this extend to quoting something in an answer that may contain profanity? For example a question about dealing with problematic clients I wished to quote Goodfellas as part of my answer:
Henry Hill: [narrating] Now the guy's got Paulie as a partner. Any problems, he goes to Paulie. Trouble with the bill? He can go to Paulie. Trouble with the cops, deliveries, Tommy, he can call Paulie. But now the guy's gotta come up with Paulie's money every week, no matter what. Business bad? Fuck you, pay me. Oh, you had a fire? Fuck you, pay me. Place got hit by lightning, huh? Fuck you, pay me.
Would that be acceptable or does the quote itself need to be altered too?