This is one of my things that's accepted and indulged. Upon leaving a party or dinner or whatever and already having said goodbye and to signal stop dragging it out already I put on a world-weary voice and accent of a Transylvania ghoul with a dead bored look and say, "How I do detest long dragged out desultory goodbyes." Then flick to a high pitched cheerful cheerleader voice and chirp a thoughtless, "goodbye." The person I say that to returns the chirp, "goodbye" and spins around and separates without another word. It's directly and hurtfully rude. They followed you out the car to prolong the goodbye. But it's hilarious anyway because it works.
Kids so filled with glee, what do you think? He reminds them of Catholic girls somehow. It doesn't make sense.