Dear doc_comfort: I looked at that phrase which taken out of context could be used to hide a sexual fantasy. But the following lines are too violent for such fantasy, it seems to me. I have heard of female ejaculation, but nothing like that!

Keiva sent me a PM mentioning "numbers", which reminded me of euphemism in grade school, where kids asked permission to go to toilet by holding up fingers, one meaning need to urinate, two meaning need to defecate. This is frequently used in sports stories with one coach bragging that his team "will do a number" on the opposition.