You mean, girls don’t compare clit sizes? 😛
Okay, serious answer: Yes, I have measured, I think every guy does at least once. I haven’t done so in a while. Not like it’s going to change at this point. I only measured a couple times as a teen (22 now), and I definitely noticed a difference between the times I did. But there’s also a point where you know you’ve reached the maximum and further change is not happening.
I have only compared by sharing the number with my best friend (and I don’t count all the times I shared it on VT or TH lmao).