The phenomenon of playing a game on Steam and either getting killed or missing vital information due to Steam blocking out the bottom-right corner of the game to tell you that a friend has logged into a different game. Named for mailman Cliff Clavin from the TV show "Cheers," who often spouted useless, wrong, and/or unwanted trivia to the annoyance of the people around him.
by Defenestrator January 01, 2015
by Anonymous February 18, 2003
A little known fact of useless knowledge that some barstool prophet spews out to make conversation, and to make themselves the smartest schlep in the room. Re: Television show Cheers, Cliff Clavin.
by PhyscoBilly March 14, 2022