I think he is after salt, and just likes to groom another 'cat', that cat being you. We had a little orange cat who loved to lick our faces, she would also lick our forearms. In fact we have had several cats who liked licking our forearms, so salt on skin, and our cats thinking of us as another 'cat' in the herd that needs to be groomed?
Cats sure like to pounce. Feet with wiggling toes grab their attention. Have you seen that great cat toy on tv, it is a yellow fabric circle you lay on the floor, it has a battery, and a thing zooms around underneath, around and around? We are buying one for our cats, maybe you should too, to save your toes? Also, it could be worse, a few years ago in a big city near us there was a pervert who approached women waiting at bus stops and grabbed them to suck their toes. Ewwww!!