Wordrobe Malfunction

Letting a vulgar, obscene, profane or generally offensive word slip in the presence of one or more easily offended fellows.

Grandma: We are having a luncheon followed bt an intense game of bridge, will you be there?

Grandson: Sorry grammy, my budy Sam just got busted fucking his, ... sorry Grammy.

Grandma: That's ok, you just had a wordrobe malfunction.