stocking cap.

I was in my house the other day, and I got a call from my mother while she was at work. She said that she got a call from our neighbor saying that she saw a man in a stocking cap hopping over our fence into my backyard. Naturally I freaked out being as short of hearing there is a stranger man in my house, this is about the worst thing I could hear from a phone call. My mom didn't understand why I didn't like this news and said she was just calling to check up on the dogs and told me to go outside and bring them in. I refused to go into my backyard and left the house until I realized that I am a rock and can handle anything. I'm not even positive I know what a stocking cap means.