Greasing and grabbing: Mer solo jerk-off action

I'm stretching my balls and pumping my cock in this clip. My work is paying off - I'm actually getting a bit "bigger" - what's really happening is that by keeping more blood flowing to my cock by stretching and exercising it, I'm just really starting to reach my full potential. All guys know their cock size fluctuates a bit based on usage, so I'm just keeping myself ready to perform at my best.