I know "thick" is a rather subjective word when it comes to cock size. Though much debate has come of the search to find the average penis size and to console ("the motion of the ocean") or reward ("damn, you're huge!") men who fit anywhere along the length spectrum, girth seems so much more of a mystery. I would say I've heard 4" as an average girth, but of that I can't be wholly certain. Ask around and "thick" may mean different standards of measure. "Thickness" in comparison to the infamous dollar bill test, toward a roll of toilet paper, or by sight comparison with household items like aerosol spray cans and beer bottles. Pictures often exacerbate this: a man will prove his girth by a side-by-side with a Budweiser. And, of course, anyone can get online and initiate a dick conversation to include some say on how long and thick the johnsons are. When all else fails, "it's thick" (but I haven't measured) is a popular catch-all. So, in person-to-person comparisons, it's really funny to examine thickness. Dicks look thicker on a top-down basis in ratio to length (short and thick versus long and thick but perceptually thinner), sure. But here's a personal observation. "It's thick," I noted, because it was wide on top, perhaps even beating mine by a few millimeters; after grabbing it to compare, however, mine definitely filled my hand more -- as if he didn't have the spongiosum (sp? -- referring to the underside thickness) to support it.