Twaks

Me, pointing to the batman sweatshirt on the floor, where Charlie dropped it after coming in the door and taking it off: "Charlie, what is this?"
Charlie, in a cheerful, instructional voice: "Oh! That is the twak(track) of me takin off my fweat showt. Dat's how you can twak wew I was. I was heew, Mama, whened I taked it off."