draw the blood

Term used to describe rough sex, resulting in the bleeding of the female party. Oftentimes heard as a distant roar to ladies of a well groamed nature.

The Hod: "What are you up to for the night?"
Stack: "Going to call to herself's house and draw the blood."

Next morning...
Barra: "What you get up to last night?"
Stack: "Drew the blood!"

*Hot girls walking in close proximity*
The lads: "Draw the blood!!!"