In "Sirens" (1993), part two, Mark Gerber leaves nothing to the imagination. His nude body is a masterclass in male form, every inch sculpted and toned. The focus is on Gerber's substantial, uncircumcised cock, which hangs heavy and proud. The setting is intimate, with Gerber's solo performance oozing sex appeal. He's a man comfortable in his own skin, and the result is a titillating, no-holds-barred display of pure, unadulterated manhood.