The cremaster in action

I'd be surprised if this fascinating clip hasn't appeared here already, but hunting it down in the archive would take hours. Watching this stud pleasure himself with a pre-fleshlight jackoff toy is stimulating enough, but, to me, the real fun comes in seeing a rare display of the cremaster at work. Although normally an involuntary muscle that raises & lowers your nuts in various circumstances (all in their best interests), the cremaster can also be worked voluntarily by contracting the pubococcygeus muscle or, as demonstrated here, by flexing and tightening the abs.