Σκληρό τράνταγμα πούτσας με κρύο ντους

I'm sitting on the edge of the bathtub with my dick hanging out. I take it in my hand and jerk off, pouring cold water from the shower. The dick hardens like hardened steel. The balls strain and want to squirt out the hot semen, which spreads over the cooled skin and warms it.