I was talking with a couple of guys I work with, and we came up with a new system that married men can use to rank women. I've taken the liberty to assign each level a letter grade.
In reverse order
Level F: Women you won't sleep with under any circumstances.
Level D: Women you might have slept with in your bachelor days if you were drunk enough.
Level C: Women you would sleep with if you weren't married.
Level B: Women you would sleep with even though you are married.
Level A: Women you would sleep with even though you are married, and your wife wouldn't get mad.
Obviously Level A women are the true cream of the crop.