Diameter or Circumference

[Styx]

I've always wondered this but which is used to describe cock thickness? I'm probably just over thinking things.

Anyway looking forward for a answer.

 

[William.]

It uses inches to describe thickness.

 

[Thebiologist]

Diameter obviously. Otherwise, pencil dicks.

 

[Styx]

Thanks, I was wondering since one of my recent characters has gotten to a rather absurd thickness and I was having a hard time imagining it.