After eating 2 burritos, spread a girl's butt cheeks apart and vomit into the bowl-shaped cavity. Proceed to have anal sex, using the partially digested burritos as lube.
When a guy takes a girl to Chipotle to get a burrito. He then takes the Chipotle burrito an shoves it into her vagina. He then eats the burrito while it's still inside her. Good for both parties because they are both stuffed.