Wrong nipple

Earlier this morning, I was reading the comments in a community, and I saw someone say, "The only intuitive interface is the nipple, everything else is learned." Now I thought that was a bit weird, since I've never found the little nipple in laptop keyboards to be intuitive, exactly, but okay.

Someone just replied with:

I beg to differ. Even the nipple must be learned, and not all babies (or mothers) are capable of doing so.

And now all I that's running through my mind is "WRONG NIPPLE WRONG NIPPLE WRONG NIPPLE".