[@Kyrisse] Okie dokie.

Robert'll probably hear someone come in and hope that person doesn't check for him. (Shower curtain is still mostly drawn, but his hiking boots are somewhere outside the shower. If there's space for getting dressed with benches, his shoes are probably there somewhere). 

Think he'll probably keep his head down until he hears someone rustling the shower curtains. He'd probably look up to see who it was and then try to brush it off as if he was totally not sitting on his ass doing nothing in a shower while people outside are dead or dying and people are moving the dead and dying.

(I.e: Try to stand up quickly as if nothing was going on. Might slip though if he tries to stand up too quickly. Depending on how long he was in there, his legs might also be a bit numb :D)

Oh, come to think of it, he might get a bit of a headache too if he actually manages to shoot right up without falling. But of course if he was asked, he'd certainly say "It's nothing."