Very true about lurkers and never knowing. Men, no matter where in the world we are speaking of, just do not talk about their penises. Most of the time anyway. Women are the complete opposite. They go pee together, they change clothes together, they admire each other's bodies, they talk about their periods and yeast infections, etc. Men, unless it's a tongue in cheek comment, or a joke about penis size, usually do not discuss such "taboo" subjects. There are men literally everywhere though who do PE. But, trying to get a rough estimate of a number? Good luck.