MacArthur Park
verb: To poop in a urinal. noun: A big pile of poop in a urinal. It's called that because of the line about someone leaving the cake out in the rain, but it's like that cake was thrown into a toilet and stepped on.
He MacArthur Parked in the urinal and left a mountain of poop for the next guy.
That urinal was MacArthur Parked so bad, I had to use the trash can instead.
I saw a guy MacArthur Park in the urinal and it was like a crime scene.