When a man ejaculates in a woman who has crabs and then eats her out. It's only a Colorado Crab Cake if the man does it and has no knowledge that she has crabs. If the man knows that she has crabs and they perform a Colorado Crab cake purposefully, then it is called a Pueblo Crab Cake.
Dude went on a date and had some Colorado crab cake!
Bro took her to red lobster and had Colorado Crab cake for desert.
He knew she had crawlers, and went for the Pueblo Crab cake.