(1) "Clive Diffing" is a misspelling of "Cliff Diving" by drunken hockey fans in an internet chatroom or message board. (2) 1950's English actor.
After a few Mooseheads, the phrase, "I hate those Cliff Diving bandwagon fans," becomes "I hit those Clive Diffing assholes."
by Jacketfan March 8, 2011