Like a few other people in this thread, the first time for me was watching Susan George get sodomised in Straw Dogs. My sister was about 18 or 19 at the time and at her prick-teasing peak; seeing that scene made me realise just how much I'd love to have seen my sister getting brutally taken up the ass like that. But that's a long while ago, and when I saw the film again recently, I was pretending it was my daughter rather than my sister in the Susan George role!
