Taking my erection in hand, my other hand I use my index finger and thumb to grip at the root of my erection. As I pump into my hand, I feel a 'ring' of sensation.
I use my right hand to stroke my very firm and sensitive erection. My other hand is making a 'cock ring' of sorts. Using my hips to pump, I can release my ringed hand, pump more blood into my cock. Cummmmmmmmmm, Cummmmm