Cocks are fascinating things. Last night sitting between 2 of my regulars at Happy Bar (Soi Yen Sabai) I decided on a little empirical study . Both guys were of similar height, weight and age and my hands soon slipped under their flaps and I found them still flacid.
In my rt hand was a thin but surprisingly long flacid cock (about 4 inches I guess) whilst in my left a thicker but much shorter (about 1.5 inches) also flacid.
They didn't stay like that for long, but how differently they grew. The 4 inches, when bolt upright only grew to about 5 inches, with no thickening of the shaft or head, while the shrunken one in my left hand rapidly expanded to a full 6 inches with thick shaft and even thicker glans.
As more study of this was needed, I offed them both