Feces that contains a large amount of corn lodged inside of it. Usually in the shape of a brown log "corn crap" contains yellow nibblets that protrude like branches on a tree.
"I had so much corn tonight im gonna have a huge corn crap."
by JoshElliott November 09, 2005
Corn nibblets on the surface of the feces making the log look like an ear of corn.
After that healthy dinner of corn on the cob last night my poo was corncrap.
by Jerry Smilten March 13, 2011