From the horse's mouth: "Let me buy a [security] card, then go and measure my penis, and let me get on the airplane," he said.
Now before Jimmy goes and gets all bent out of shape...
Wiki says at http://en.m.wikipedia.org/wiki/Human_penis_size?wasRedirected=true
"While results vary across studies, the consensus is that the mean human penis is approximately 12.9–15 cm (5.1–5.9 in) in length with a 95% confidence interval of (10.7 cm, 19.1 cm) (or, equivalently, 4.23 in, 7.53 in). The typical girth or circumference is approximately 12.3 cm (4.85 in) when fully erect. The mean penis size is slightly greater than the median size."
Pictures omitted to avoid hard feelings.
Location:Westgrove St,Raleigh,United States