Hard to say how common, but as a data point, KK regularly has me do a 'bone-pressed' measurement as part of our ritual. She has every millimeter committed to memory. Same for the boyfriends - only one cock she measures on her own, a truly hung friend named Rick. That's extraordinarily fun to watch...A post I just made in another thread got me thinking. I supplied my wife with my exact length and girth measurements (by measuring in front of her which was a great turn on for both of us).
I get turned on thinking about her sharing with her friends. It got me to wondering how common it is for a woman to know these precise details and thus the possibility of comparing notes (or even past partners to cureent).
For the guys on here, how many of yout partners have measured and at whose behest did the measuring take place?