The reason I pull Irish exits is not because I think I'm too busy and cool to be bothered with pleasantries. It's that when there is a gathering of more than thirty people I don't want to waste your time with hellos and good-byes. I think it's actually the more polite thing to do, because I'm not coercing partygoers into some big farewell moment with me. Then other people feel like they have to stop what they're doing and hug me, too. It's time-wasting dominoes.