Drunk-dialing

Jim was just here for leftovers (happy St Stephen’s Day to the rest of you, too!) and we were talking about some drunk-dialed calls he made last week. I thought it was in the middle of the night, but it wasn’t, they were done in the afternoon. So I asked him, “Aren’t drunken calls usually made after midnight?”
He said, “After midnight? That’s for amateurs.”