Ever heard of "shoeplay"?

I was accused of this a couple of times at school. But I'm not trying to be sexy. I'm just trying to get comfortable. And the evidence for this is that I like to haul one foot up followed by the other to my lap and pop the foot bones as well as pop the toes by extension and torsion. I picked up this habit from years of martial art training where its a habit to crack all the joints including the feet, hands, neck and back. Needless to say this means I have to find a spot in the back of the class to sit where I can indulge myself without someone seeing what's going on, LOL!
🤓