My my there seems to be an awful lot of very well endowed peeps on here!
My other half likes to cuckold me, and has many men *ahem* "service" her. We have lost count of the amount of so-called "8-inchers" who have in reality turned out to be half that size! And in fact, with my more modest 7.5" it has proved difficult for her to properly cuckold me as 95% of the guys she has been with have been smaller. Perhaps I should ask her to pop on here seeing as we have an unusual amount of donkey-dick'd studs amongst us!!
This numerically challenged quirk also seems to apply to height as well- I've also lost count of the amount of "six-footers" who have been shorter than my 5'11"!