Every chance I get, in as much detail as possible. See, if I went out with a woman even when I didn't fancy her, and only because she asked me out, it always works for me to keep her at bay by describing my past sexual encounters/experiences. It works like magic!
See, thereby, I don't get called a MCP for rejecting her, I get to have dinner at HER expense, and then she leaves hearing my tales of grandeur. It's ALL a win-win! :-D