ME: Hey… listen, I’m really sorry I kept trying to hit on your friend last night when her boyfriend was out of the room. I was really drunk.
FRIEND: Oh, don’t worry about it. That never happened!
ME: Yeah, I wish…
FRIEND: No really, it never actually happened. That got retconned.
FRIEND: Oh yeah, that whole thing happened in a universe that doesn’t exist anymore. Retroactive continuity man. Retconning. You just got retconned.