"I'm back! I was actually secretly keeping an eye on you while you were stroking to my photos. It turned me on so much watching you getting excited over my pictures, desperately trying not to cum."
"Anyway, enough of all that 'allowing you to stop whenever you want' stuff. This isn't called an endurance challenge for nothing. 50 strokes with no stops in between."
[10 seconds rest]
"50 more."
[20 seconds rest]