A slang term used to down-play a first place finish by NASCAR's Jeff Gordon. Often this term is used by mid-westerners who, for obvious reasons, feel threatened by the prowess of a driver from California. The ultimate use of the insult is to train a child under the age of 4 to yell it in the presence of #24 fans.
Likely the insult originates from the term's common use as it relates to a "cheap win" in Vegas.
... and the Chevy Dupont #24 takes the checkered-flag here at Darlington... Winner winner chicken dinner.