The 7 year old son came in from school

The 7 year old son came in from school today and asked me:

“Dad, what kind of mouse can walk on 2 legs?”

“Erm, I don’t know” I replied.

“Mickey Mouse” he replied laughing.

“Dad, what kind of duck can walk on 2 legs.”

“Donald Duck” I replied.

“No, all ducks you idiot.”