Two strapping, muscular brothers, bored in the locker room after practice, start roughhousing and wrestling. Their intense, sweaty play escalates as they joke and tease each other, with one brother catching a glimpse of the other's thickening cock through his jockstrap. They laugh it off, but the tension's palpable. They start comparing sizes, leading to a full-blown cock measuring contest, laughter echoing through the empty showers.