Top definition
asshole who gives useless information, originated from the sitcom Cheers.
That fucktard just pull a Cliff Clavin. He gave me some useless shit.
by Anonymous February 18, 2003
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug