@pmrrk

Bo Sinn
Colt Spence
Ash DeLeon
James Deen (ignore the cunts)
Rhyheim Shabazz

In the Robert Prion movie "Hard Obsessions," Rick Thomas does naked chin-ups and cums during the exercise. I am having trouble finding a copy of the movie to download. Anyone have it?

Any other examples of this particular method of producing a hands-free orgasm?  It was clearly the exertion and the internal abdominal pressure that caused Rick Thomas to have an orgasm. It was an extremely hot scene.