To make a big mistake, a social faux pas, to err.
Kind sir, might you lend a hand and add a funny phrase?
When you get a voicemail from a friend and it's just incoherent conversation. You have just been "Butt Dialed". See also Telecommunications.
A unpleasant way to tell someone their cat's dead when you're in a hurry. See also Pets.
Kind of offensive, kind of polite. It balances itself out. See also Profanity.