Not too hard to cum when being masturbated by another man if he has his cock buried deep in your ass at the same time, rubbing your prostate gland and helping you to reach your climax.
to gem002 :You are right. My top daddy would collect my cum in his cupped hands and then rub it on my hairy chest while his cock would be inside me working with my prostate gland.
to mah363 :Me too. The stroking of your prostate gland by his cock, moving in and out of your rectum, brings on a lot of stimulation and often results in a spontaneous climax on your part.