Seth Stevenson, writing for Slate, on an alternative to the awkward and time consuming process of saying goodbye at social gatherings:
Just ghost.
Ghosting—aka the Irish goodbye, the French exit, and any number of other vaguely ethnophobic terms—refers to leaving a social gathering without saying your farewells. One moment you’re at the bar, or the house party, or the Sunday morning wedding brunch. The next moment you’re gone. In the manner of a ghost. “Where’d he go?” your friends might wonder. But—and this is key—they probably won’t even notice that you’ve left.