Irregular Plurals

Noah: Mom, I want you to use the foot cookie cutter on my sandwich.
Jeana: What? You want a foot sandwich?
Noah: No! I want two foots! Like my two foots. I have two foots!
Jeana: Feet.
Noah: Foots!
Jeana: No, it's feet.
Noah: Feet? No...I think it's foots.
Jeana: One foot is foot, two foots is feet.
Noah (lifting his right foot): This is a foot?
Jeana: Yep
Noah (lifting his left foot): and this a feet?