Neg theory was refined for seduction by a gentleman called 'Mystery'. It is a great insight into the mind of beautiful women and how they process information. It works like this:
When a girl is very pretty (beautiful / hot babe [hb]) - ranking on the scale of either 9 or 10 - they are bombarded with men asking them out. They do not have to make any effort because their looks have always achieved for them what they need or want. Men constantly complimenting them. Guys are endlessly falling all over in an effort to meet them. Basically, because she is beautiful, men have put her on a pedastal. Using the 'Mystery Method' of 'Neg Theory', you take away this PEDASTAL and bring them back down to your level or even a level lower than you. I have my own Negs that I have been working on that deal more with ambiguities in their personalities - but MM stuff works nethertheless - and works well. Here are some examples:

That is so cute! You nose wiggles when you talk. Do it again!

Those are nice nails! Are they real? Oh, well they are nice anyway.

Here is the breakdown. This must be said in a very light and off-handed manner. These are not put-downs. If you are too serious, this tends to be taken as a put-down rather than a humourous form of prose. With these simple sentences, you are taking a girl that is 'Perfect' and telling her that you don't see it that way. You see her - faults and all - and it does not impress you. In fact, she is pretty much the same as the other girls in the bar/mall/cafe. You do not cowtow to her because she is good looking. The girl, realizing that her looks are not going to get her anywhere with you, must try harder to impress you. SHE MUST MAKE THE EFFORT.

Some of my ideas of Negs are this:
You are really...unique (get the tonality right - like you are looking for a 'kind/nice' word)
You are dressed...different
Your smile is really...compelling

They need to ask exactly what you mean - for more clarification - in these instances and therefore it creates an interest.