Hey dudes. I have used some negs to bad effect, and I'm learning to use more subtle ones. I recently thought up (hence haven't tested yet) this one:

"Is that your natural hair colour?"

either way she answers can be a neg

yes - "Oh ok, it looks...nice"
no - "yeah, I thought so"

and the girl can not really get offended either way without looking like a retard. I like "hair" neg. "real hair?", "look better with shorter/longer hair", etc. You guys field tested/invented any good negs?