"And Goodnight, Mouse"

On Monday, my mom was over taking care of Ben.  Before his nap, she read "Goodnight, Moon" to him - one of his favorites!  When I came home from work, she said to me,

 

"The part where it says, 'Goodnight, mouse"?

 

 and I said,

 

"Yeah, he always points to it, right"?

 

and she said,

 

"You used to do the exact.same.thing".

 

Woah.