Cigarbabe is on to something. I never lie about the size of my tool because there's never been a need. One look and it's obvious I'm endowed for work in a freak show. Which, by the way, is not terribly good.
Some guys I've had the hots for who have unquestionably been natural alpha males have avoided any sexual hookup with me whatsoever because I intimidated them. I'm 90% of the time known as one of the most pleasant, kind, and generally-easy-on-the-eyes ancient 57 year-old you'll ever meet. But those alpha-type "I've got a 8-9" dick" guys have frequently passed me up. This is sort of a reverse of the OP's question, but it still has to do with why so many men make up how big or small they are.
Size queens, of course, are always interested in pestering me. Which is another thing I do not understand. After early experimentation as a teen learning that I could -- with relative ease -- stuff my own semi-hard dick WAY up my own ass, I never wanted to do it again. And have never understood that particular fetish of "big cocks only." In my profiles on gay sites I usually just put "Just be satisfied that it works!" where they insist you check small, medium, large, or other.
I have, however, met a number of very good men who put in their profile that they were "small" when they were anything but. I used to think that only gay men were into lying about the size of their dicks, but it's obvious almost all men are. Weird. Maybe it has to do with growing up in a culture that worships (or worshiped) big things: Cadillacs, Buicks, Town Cars, big block pony car engines, big boats, etc.
Personally, I don't care how big one's dick is as long as 1. They keep themselves clean, 2: are reasonably fit for their age (love handles are often very sexy), 3. Consider the feelings of others and are kind, 4. And have a good self-image of themselves.
