Mom stuff

I think that it is really gross that I use my shirt as a kleenex for my boys. We were playing outside and before I could think about it, I had wiped Jacob's snotty nose with my shirt.
What is it about being a mom that makes these sort of things ok.
Josh makes fun of me because I will pick up a half eaten, very handled cookie and just pop it in my mouth. What is this??? I am such a germ freak but oh well.