Depends, do I have hands or fingers free? Are my legs and arms restricted? But in general I was taught to grab and pull anything I could, even pulling a pinkie hurts and they will generally let go, but I would just do whatever the situation determined. It’s kind of hard to say exactly what I would do without being given a more specific situation. And head butting is pretty high up on the list, you just do what you have too to get away.