Hence why i said obvious they are enjoying it .cybele said:I disagree with that, I think were very quick to jump to the sexual meaning.
When babies discover their feet they play with them, are fascinated by them, put them in their mouthes, that dosent mean they have a foot fetish, it just means that they have found their feet.
Same goes for genitals, they have found them, so they play with them, they dont know that in adult world its seen as something else.