How to tell if he’s got a big cock

There really is no fullproof well researched way to tell. People speculate things like "if he's tall and lanky", "if his foot/hand" is this size", etc. But these are anecdotal, you'll just have to ask for a pic of it lol.

I think the only semi consistent thing would be attitude, but even then that isn't constant with all hung men at all
 
There is no sure way to tell. My college roommate was really short, except down there! I have pretty good gaydar, and now that I think about it, it must be a kind of "big dick" radar, too, as I rarely attract average or small dicked men. Hmmm....
 
If you want to know if a man has a big dong, then ask him! He may, or, may not answer you.
If a total stranger just walked up to me and asked, I would neither confirm or deny.
 
I am over 6ft tall, barrel chested, my index finger is longer than my ring finger and I wear size 14 shoes. I have a very tiny penis.
Interesting. Are people shocked when they find out that you are underendowed?
 
It wouldn't work in a competition because people world be overly suspicious but in real life I would bet you any amount of money you'd never know. I have literally given out zero signals in nearly 50 years given my complete ignorance to my size, and had absolutely zero interest from women sexually. Zero. Big fat fucking zero. In fact, thinking about it, I've had more interest from gay men.
 
It wouldn't work in a competition because people world be overly suspicious but in real life I would bet you any amount of money you'd never know. I have literally given out zero signals in nearly 50 years given my complete ignorance to my size, and had absolutely zero interest from women sexually. Zero. Big fat fucking zero. In fact, thinking about it, I've had more interest from gay men.
I can relate on that one. If I was gay I could get a date easily. Only one problem... gay sex is the biggest turn off for me.
 
Interesting. Are people shocked when they find out that you are underendowed?
it is more often than not assumed I have a big dick. This definitely adds to the surprise/shock when someone sees how tiny my penis is. Even if someone is aware of gossip that I have a small penis they don't imagine how tiny it actually is.