Since when was sex done by a rule book?

There are only two rules, in my book:
1. Safe sex where appropriate.
2. Consent.

Anything else, is completely arbitrary and a matter for the participants to decide.

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You know, Blackadder, for me socks are like sex. Tons of it about and I never seem to get any.

My Photos:
https://imgur.com/a/80hiRdm