Slam-Click

Heard another flight attendant talking about 'slam-clicking.' Asked her what the hell that was. Turns out it's a term used to indicate those members of the crew that go directly to their hotel rooms and don't go out with the rest of the crew. It's the noise the door makes as they shut the door and lock themselves in. A slam-clicker. I slam-clicked. "Sorry guys, I'm slam-clickin' it tonight."
And somebody somewhere thought that up.