I have had more than a few women who actually measured me. My second wife was kind of in to it and it wasn't unusual for her to do it as part of foreplay.
I would also say a lot of women measure "wrong." Typically in a way that adds length. I've been measured over 10 inches a couple of times. I didn't bother correcting it or finding out if they knew their method was flattering.
Basically had this happen last night. She went hand over hand up my shaft before announcing "You cock is 11 inches long."
When I asked her how she knew that, she told me her hands were three inches wide and my cock was almost four hands. She didn't notice that, because of the way she was grabbing me, the first "hand" was basically the width of her thumb around the base of my cock. It was pretty much like measuring the under side of my curve, which adds quite a bit to my length.
She seemed to like the idea that it was that big, so I didn't correct her method.