A Little Donkey Burito in Spanish

I think it's more used in american english, but i hear it on podcast all the time. Those three words together in that order is a very common expression. Oh, this guy, he's completely ignorant. He doesn't know anything. Zip nother. Dreg how would you say in spanish? A little donkey burito. Ah, and what else could that be? It could be something that you would eat. Yes, lovely boritos. Can you think of any other words which are similar to brito, tacos, encilades, fahitas?