What is typically said if something very outlandish happens. Often used when large amounts of alcohol are being consumed. Can result in a "spit-take" (one spitting out their beverage because of laughter) if used at an opportune time. This term is a play on words. Taking the term cock monster and the beloved American sport of Monster Trucking.
When playing poker and one realizes that his straight flush has been beaten by a royal flush.
"Cock Monster Truck!!!!" "That just did not fucking happen!"