In a room filled with the sound of flesh meeting flesh, a man in briefs takes center stage. He grips his bulge, feeling the weight of his balls, then brings his fist down hard. The impact sends a jolt through him, his cock twitching in response. He repeats this, each smack more intense than the last, his briefs becoming a sweaty, clinging second skin, his balls reddening and swelling from the brutal, yet delightful, treatment.