Drat, should've used this in my Prisoner of Azkaban parody!

This gave me an LOL this morning...



Being Fred and George, they completely would tease Ron about it if they'd noticed. I assume they just never looked at the boring old dormitory while working their mischief--can't think of another explanation.

Though on the serious side, if they had noticed, they could have saved everyone a heap of trouble. Hmm.