"Just don't fancy doing the work of a house elf. You might not be above it but I sure am." He did idly use his sponge to rub at the sides, doing a pretty piss poor job of it all. He was hoping to distract Snape with some kind of discussion about his father or something and then getting away with it. Also Snape did love pissing Harry off as much as he did so it might still work out.

"Some of us are made to be on top, Potter. And some of us are at the bottom, cleaning and scrubbing. More where you belong, isn't it?" On purpose, he pulled his sponge back and squeezed at the same time, purposefully flicked water towards Harry.