Mispronunciation is Cute, right?

Momma: Nicholas, what animal is that?
The Boy: Hippotatamus
Momma: That's is right, but can you say Hippopotamus?
The Boy: Hippopatatamus, Momma
Momma: Close enough :)

I don't think I want him to say it right...the mispronunciation is so darn cute!!