Thomas has run clean out of patience, although perhaps he never had much in the first place. A shared bathroom is all well and good in theory, but only when it is in fact shared, and not being used exclusively by one person for... well, he doesn't know how long it's been at this point, but it feels like hours. Going upstairs to the next floor's bathroom is a frustrating dead end unless he wants to substantially worsen the aches and pains that seem to have replaced normal function for him — and in any case, it's the principle of the thing. You just don't get to hog a shared bathroom. It's fundamentally unfair.

He bangs, very loudly, on the bathroom door, with the whorl of his fist. "Whoever's in there," he calls, his tone waspish, "I suggest you finish your ablutions and make your way out now."