I've always listed myself as 4" x 4". When I first measured for a site like this, I'd never measured girth (around), only width (across). I didn't have a tape measure, so I wrapped a piece of paper around my dick and came up with about 4". Later on I used a piece of string instead and found out I was a little less than 4", a fraction under 3-7/8".
By some people's standards I wouldn't be called a "pencil dick" because it's proportional to my length. But it really is thin.
I've had many MFM 3-ways. Compared to other guys, mine looks really skinny. The few times I've held another guy's cock, the difference is unbelievable; theirs feel really thick in comparison, mine super skinny.
I'm surprisingly good in bed -- women come back for more -- but that's mainly due to my looks and oral skills. I'm a rotten lay when it comes to fucking, at least most the time. After a brief affair with a buddy of mine when I was overseas in the Navy, my first wife explained that a bigger cock "stretched" and "filled" her more. I've always felt that was mostly due to girth, proving the claim that girth is more important than length. "Girth is king!" If that's the case, I must be "The Little Prince!" LOL