What do you hate sharing with people?

My hairbrush.

I'm not OC or anything but I just get annoyed when someone borrows my hairbrush. For example, when I'm in the washroom and I'm using it and then someone (with the exception of my family) be it my friend or a co-worker asks to borrow it, I'm faced with the dilemma of letting them use it or not. If I say no, it might seem that I'm being rude, but if I let them use it, I'd have to spend several minutes to get all of their hair out of the brush, wash it through running water and soap, and then let it dry before I actually use it again on myself.

Does it sound OC to you? Maybe I am, huh?