knock knock!

When Nut Brown wants to come in from outside, he stands outside the door and yells, KNOCK! KNOCK! KNOCK! at the top of his lungs instead of knocking. This was funniest to me over the summer when he was on the back porch at Grandma's house and started hollering, rather than bang on the door. We didn't even realize that he was outside, when a loud little boy voice suddenly shouts, "KNOCK! KNOCK!"