Back When Uncle S Lived With Us.

When my uncle was giving me a bath, we got to talking about how humans are the only species who really make the decision to bathe or shower. We talked about how weird it would be if we licked one another (like other mammals do) and if that would really work to keep us clean.
Next thing I remember, I was laying on his bed and he was licking my private parts. I was so weirded out by it, but I also enjoyed it. That was the first time he ever "cleaned my privates," but it certainly wasn't the last.