These first two have been mentioned here already...

When I wake up I sometimes stretch like a dog. Like when they put their butt up in the air. lol I'm weird.

I also don't like any of my food to get mixed up on my plate. I refuse to eat it if it is mixed up some other food.

I don't like it when someone messes up my bed. Even if the comforter is slightly tilted or something, I have to straiten it.

I always pop my fingers and knuckles. I do it many times a day. It just feels good to do it, I'm not sure why though.

I also don't know how to bite my nails. I have never bitten my nails, so I have to continuously be cutting them.