Intimate relations

In the early stages of a relationship with a former girlfriend, we were chatting away and got onto the subject of her bra size, which I correctly guessed. 'ooh you think you know it all dont you?' she said, to which I replied 'Of course, like I also know youve got a big mole on your (........)'. I have no idea at all why I said it, its not a comment i would usually consider making under any circumstances, but it just popped into my head. Her jaw dropped......I had no way of knowing her anatomy, as we had had no physical intimacy prior to that, and had no mutual friends who might have furnished me with the information, but it turns out that she does have a very unusual and prominent mole in the specified area. I wish someone could have videotaped the inquiry that followed......