A conversation
ender. Used at the end of a statement when a person in the middle of a conversation wishes to stop talking about it immediately.
Coined from the TV show
LOST, where at the end of every episode, the word "
LOST" flashes across the screen, ending the episode very abruptly or on a cliffhanger.
Guy 1: "So I totally hooked up with that hot blonde last night at the party. I
wish I had gotten her number."
Guy 2: "Dude, that was my
cousin.
LOST."