Digressing a bit from your question, Simon; the only really close friends I have are a handful of guys I've known for more than 50 years, from school and university days. We know intimate details about each others various wives, girlfriends and mistresses, and their various sexual tastes, which ones liked it up the arse and so on, our tastes in porn, the lot. But I can never, ever even hint at punting, not even with them.