Rick later teased Jerry for forging a friendship with Doofus Rick, who allegedly was from a universe in which the people eat their own feces.
Though it’s been reported, co-creator Justin Roiland later explained that Doofus Rick did not actually eat poop, and it was just a rumor created by other Ricks to bully him.
Doofus Rick was introduced as a Rick from another dimension, though one that was remarkably nicer and kinder than the Rick Sanchez of Rick and Morty.
Doofus Rick told Jerry his coin collection was valuable to him, and that was the only thing that mattered.