any other babies do this?

Elizabeth
My son does this thing when he is done eating but does not actually want to be done. He bobs his head on and off my nipple, kind of reminds me of bobbing for apples... 
He also does this when searching for my nipple if he is laying chest to chest with me. Cracks me up every time. He is not always hungry, he usually passes out as soon as he locks on.