Headscratchers / Jelly Jamm

• So Ongo lives outside on a couch, right? What happens when it rains? Or storms? Or when it's winter? That kid must have the world's strongest immune system.
• Speaking of Ongo, what's the deal with his "Oh, mama!" line from "Rita Adopts A Dodo"? He's supposed to be mute, but there he spoke perfect English. So is he able to speak and chooses not to, or is he actually mute and the "Oh, mama!" line was only thrown in For the Lulz?