What is this kids tv show called?

This is pretty vague but all I remember was that there were two guys (I think) and they had a friend that was a small puppet. They stayed in their house but there were ALOT of rooms in their house that they explored and what not. They used funny words a lot, like they wouldn't know the name of something so they replaced the name with a silly word.

Does anyone know what show this is? it was on nick jr or something, really early in the morning (about 1 or so in the morning) about 3 or so years ago

Thanks :)