larger penises with upward curve

I was just wondering if there is any truth to the idea that only big cocks point downward when erect. I've also heard smaller cocks point upward but being nearly 8 inches myself with a very strong upward curve when fully engorged, I can say this isn't true. However in porn and on this site I would say it is rarer, and the really huge cocks do tend to point very straight or downward.

What do you think?