Serbian Frito Pie
When you eat pussy that's so yeasty it makes you vomit on it, then you fuck her in her dirty asshole and stick your shit covered throbbing member back in her disgusting vagina; mixing the feces, vomit, and yeast...and then going back down to chow on your delicious meal.
Luke didn't anticipate having a Serbian Frito Pie with Lana after their taco/burrito combo meal from Taco Bell, but here we are.