Cross your piggies!

Colin likes to play this little game with us. Especially when he's eating, he'll sit with his feet crossed at the ankles. If his feet aren't crossed already, we'll ask him to "cross your piggies!" (or "cross your feet", depending on our mood-hopefully he knows that piggies and feet mean the same thing!) He then will cross his feet, wait a couple seconds while looking out of the corner of his eye at either one of us to make sure we're watching him, and then quickly (and forcefully) uncross his feet. At this we usually say "Hey!" or some other exclamation. Colin laughs and giggles and then the game starts again!