Your choices would be: 1) you would have to use non-attractive body language, voice and you won't project sexual energy to her but you will talk with her about anything you want ranging from non sexual conversation to the "dirtiest" talk and you would magically become an expert at communication with words. An exception to all restrictions could only be made once and for a brief amount of time to get the f-close.

2) You will keep all conversation casual, not using any kind of sexual talk, including and not limited to innuendos or sexual jokes but you will use any kind of sexual body language you like, tone of voice and everything sexual and you would also "magically" become an expert at communicating without words . An exception to all restrictions could only be made once and for a brief amount of time to get the f-close.

I'm not suggesting that someone try this unless he wants it, the magically becoming an expert part is not very possible.