Pale stripes cut across a guy’s tanned skin where his briefs, jockstrap, socks, or harness blocked the sun, which makes his ass, hips, and thighs pop way harder. Scenes often linger on the contrast when clothes get yanked off, with fingers tracing the lighter skin right before he gets fucked or eats dick. The look plays up that “fresh from the beach” vibe and can make cum and sweat stand out against the darker tan.