The annoying coworker is clipping

The annoying coworker is clipping his fingernails at his desk. YUCK. Doesn't he know that kind of thing is supposed to be done in private? Body parts (fingernails, hair, skin, etc.) gross me out. Therefore, I don't want to be thinking about them while at work. It's bad enough living with people. Luckily I have my own bathroom so I don't have to be bothered by anyone's lost body parts or bothering anyone with mine.

I guess I wouldn't mind about Don so much if he used the Tidy Clip.