The Nudity Buffer is a Jeffism.
According to Jeff, when you first see an attractive woman you've got a nudity buffer of maybe five minutes before you've fully mapped out what she looks like naked. You've got to assess her nipple type. That takes time. If you don't get in there and talk to her during that first five minutes it's too late, cause than she'll be naked in your head and you'll forget rule one of playing it cool... only smile at her face.