Sex as a weapon?

The Vagina small in size - yet very powerful.

Is it right to use it as a weapon to get your way? I've personally never used it as a weapon or as a way to get things. Or, maybe I have used it as a weapon without realizing it. Come to think of it, I think I might have! For example: If we get an argument, and its his fault I automatically think - No Sex For HIM! But, if it's Me that's at fault I'm pretty sure I could get it. This reminds me of an old saying - Boys play with love to sex, Girls play with sex to get love.

Could this be the answer to some of my problems. Hmm...I need to look into getting a book entitled "Using your vagina as a weapon for dummies." If this book doesn't exist yet, then ladies send in your suggestions or stories and together we'll compile the greatest how to that ever existed.