Mafia II is a violent game, and violent mobsters like to curse. A lot. In fact, during the progress of the game, Vito and his friends of assorted gangsters say "fuck" more than 200 times. It was spotted by Achievement Hunter, who now claims that they've been contacted by Guinness and that Mafia II will enter into the Guinness Book of World Records Gamer's Edition, since the amount of cursing actually breaks the old record, held by House of the Dead: Overkill.
I guess that a congratulation is in fucking order? And is it a sign of the times that I didn't even think about how often they said "fuck" when I played Mafia II...?