What is he doing?

This is weird.

I was cleaning my paws, when my human came up to me, looked at me, and started cleaning his own paws with his tongue.

This completely confused me.

I stopped cleaning my paws, stared at him, blinked, then pulled my tongue back into my mouth as I'd left it sticking out.

I'm not quite sure what he was doing, so I put my head down and went to sleep.

Weird human.