If someone can't handle their peeing, they should seat down or clean after them. That's basic consideration, especially in a houseshare. Sitting down is a very bad idea.........years ago a mate of mine needed the loo during the night after a bit of a session on the beers, as he was a bit unsteady on his feet he decided to sit down.......anyway, he fell asleep whilst sitting on the loo and fell off and faceplanted on the edge of the bath and broke his nose.....and had to wear a mask thing like Phantom of the Opera for several weeks......