playing whack a mole

when you have to shit so bad and you're trying to hold it in so that the head of the turd is popping out and in of your ass similar to the whack a mole arcade game

Fucking a girl so hard in the ass, when she has to poop, that your dick turns brown from hammering the shit back into her ass. The turd must look like it is popping out of the ass, like a mole exiting a mole hill.