Honestly, I think all the ones that turn me off have already been mentioned in this thread, though I do also find the thing that @Ms. Tito mentioned to be a turn off. In some of these cases it's like "couldn't the gal just piss standing up? It's like right in your face.". Would be interested to see that gimmick/device used differently or in a different means that isn't just based entirely on sex/gender.
Anyways, to add my own two cents to this: Peeing in the urinal facing away from it/sitting on it. I know that it seems more intuitive for many, but it's a lot harder to see the stream and