To be fair, there are only 25 millimeters in an inch. So a few here, a few there ...
And it depends where you measure from, too.
If homelesswombat did his homework, he saw posts by a lady named Carmen who was sure she had 23" boyfriends. We all shot her down. That's a bad case of overestimating.
But that doesn't mean everyone's wrong. What's the point of shooting us down?