Take a look inside

As the two of them move to the bathroom door they both peer inside to see a man they've never seen before stood with their back to them, completely naked under the shower head. For the moment he doesn't seem to have noticed them.

"Nice arse." Phina giggles a little, glancing at her brother before turning to watch the man in the shower once more.

"Wait... is he...?" Joe asks in surprise as they both notice one of his hands, moving vigorously in front of him. He turns a few degrees and it's enough for Phina's eyes to widen. The guy is clearly masturbating his impressively sized cock in their shower.