Jake likes to help out when he is having his diaper changed. He will lift his legs to better expose his bottom, make it more easily accessible. And hey, while lifting your legs why not also grab your toes? It makes keeping your legs lifted easier. And hey, while grabbing your toes, why not also suck on them? It keeps them clean and helps to pass the time while getting your diapers changed. Ah, the flexibility of a baby.