is the delightful term I've heard used for having sex with a girl on her period. I've never fully engaged in this practise but I have.

Done her up the wrongun while arsenal were playing at home.

and

Had a bit of a gory one on the tail end of her being on her period.

Same girl, she was a right dirty one.

What about eveyone else? (I couldn't be bothered to read the whole of that other thread)