I refuse to sit on anyone's toilet no matter if it's a family member. Only mine
When I turn on my computer I have to check my e-mail first before I do anything else.
I hate to eat anything that someone touched with their bare hands even if I just saw they wash their hands.
My hair must be parted on the same side.
The toothpaste tube must be squeezed from the bottom, not in the middle
I don't eat or drink after people.