crocodile gut
When one eats an excessively large portion of food in a single sitting which ends up taking a couple of days to digest. Usually accompanied with fasting.
"Hey Jim, we're going out for Mexican food, would you like to come? "
"Nah man, I ate a 5 pound steak at Earl's last night and I am working off crocodile gut."
"Nah man, I ate a 5 pound steak at Earl's last night and I am working off crocodile gut."