First of all, we have to define what small really means and what statistics apart from any personal impressions and taste actually say: The flaccid size is irrelevant, some men have a rather small penis growing to enormous size when erect, on the other hand there are men with a rather impressive flaccid penis that just erects itself when aroused and doesn’t grow much in girth or length. Flaccid and erect size don’t correlate.
Stretching with weights. Weights or stretching exercises won't bulk up your penis -- it's not a muscle. But hanging weights off your flaccid penis may stretch it a bit, O'Leary says. The catch is that it requires a freakish degree of dedication. "You might have to wear a weight strapped to your penis eight hours a day for six months," says O'Leary. At the end of it, you could be lucky enough to gain about half an inch. Risks include tearing of the tissue, burst blood vessels, and other problems.