After the incident with Mr. Jellybean, Morty is beyond traumatized. He knows Rick is the only person who would understand, yet the old drunken man still acts unsympathetic. This drives Morty to make a rather toxic choice of words. After, Morty dozing off in class and dreams a horrid sight. He realizes how much Rick needs him. And how much he needs Rick.

If Morty knew anything about Rick-it's that he loved to get very drunk. Many think it's just because he's a hopeless alcoholic, which is what Morty thought too. But he has his reasons.