"Nnngh...yesss." His fingers clawed onto the smooth ceramic as he tries to keep his mouth shut to keep quiet, fearing if somebody walks in, and that would be bad, very terribly bad, but the idea that might happen just turns him on even more, and his cock is harden with lustful thoughts. There isn't much privacy on the train, even the shower-room. His mind shut-off as his cock enters him, rocking inside of his body, as he opens up, loosen up more as he's being drilled so to speak, with his mouth and hands on his body.

Finding the rhythm, he rocks his hips and rides on his length. The only sound is the water pouring down and him, covering his mouth to stifle the moans.