Impressive.

I can only touch the tip if I really try, and then my back hurts.
A few years back I could play around with the head a bit with my tongue, without even practicing it, but I've gained some weight now.
Probably best to loose those pounds anyway, maybe start stretching or something aswell.

Doesn't turn me on watching, but it sure as hell seems like a more exciting way to get yourself off than jacking it.