a zazz zusser what?!?

7yo was reading me a dr. seuss book – the  abc’s or something.  there is some character narrating the story. on the last page (z) the narrator says it is  a zazz zusser zuss (or something close to that).  there is a picture of it.  it has long red hair.  

7yo: this is the guy who was telling the story.

me: you think that’s a guy? with that hair?

7yo:  yes. I KNOW  he is.

me:  how?

7yo:  I read it in another book…..don’t judge me.