Theo watched Harry work at the sink, supposing that there was no point in him trying the same tactics and content enough not to stick his arm into the sink, drying charm or no drying charm. He likewise stepped back as the sink before him overflowed, hearing the gurgle of the loos backing up as well.
He hadn't been expecting Harry to just fob the job off to someone else like that - Gryffindors and all - but he didn't want to fall into the old trap of seeing the House instead of the person. That would have been too hypocritical for him.
He watched as Harry tried to leave and found the door wouldn't open. "Well." he said, looking down as the water seeped it's way out, getting his shoes wet but not really caring about that. "Got a sponge?"