Originally Posted by TheDoc

It's easier to sell hardcore sex with big cocks than it is to sell big cocks as straight.

The straight big cock niche comes from Interracial sex, blacks on blondes, etc. It's also an education niche, lots of men have huge cocks and lots of women have no idea wtf to do with them. Fantasy wise, it's a bj fantasy to have a girl be able to deep throat a big cock but being almost impossible to find - the fantasy takes over in pictures that can be modified.

The niche works best to compliment another niche, when it's standalone - it's gay (to the surfer).