Watermelon with hair!

So Tommy's new favorite toy is...a watermelon! He cried when we cut one up for our picnic the other day, so we went and bought him one of those little watermelons for him to play with. On the way home from the store, Alice heard in the back seat Tommy saying something he says to her a lot, "Your hair is so pretty...hair so pretty." She turned around and saw Tommy with a pink comb running it down the sides of the watermelon like he was combing its hair! He kept saying " So pretty, your hair is so pretty." He must have seen the light and dark contrast in the green stripes that are exaggerated on those smaller watermelons, and then thought it was hair. He loves his new toy! Or should I say sister?