A suitable alternative for sex while your girlfriend/wife is menstruating also known as a blow job. More specifically as a counter to a woman who uses her period (Aunt Flo)as an excuse to avoid sex.
"I don't care if Aunt Flo is in town as long as she brought Uncle B.J."
The hardest gangster in the North East (England). Loves smashing pasties and amazing basketballer. Also a dolphin pill addict. Best mates with his main man Trekka