Trucker-speak for the Kenworth make of 18-wheelers. Called such because they are generally large and expensive, even for an 18-wheeler. Generally considered the Cadillac of 18-wheelers.
Hey Rubber Duck, I heard you bought a brand new K-whopper.
by fizzle April 07, 2004
Nickname for Kenworth trucks. Mainly CB slang.
That K Whopper blew my doors off going up that hill.
by King43Fan December 29, 2009