Here is a list (with links to galleries) based on one that I posted last September. I have removed from it those whose galleries have disappeared, but have added only one member who was not on the list before (Ruperty), so I don't pretend that it's up to date.

Ben_cBigcargo
Badboi32
Caspar_VW
Dougielongfellow
Donkeyboy9
Fire Stick
HaagenDazs
Hollywood29
Huge1_4u
Hunghuge11x7
Indeed
JonahFalcon
Magnum Excel
MrMXYZPTLK
Quercusone
Ruperty
Someguyinmass
Superslam
Stylzz
Trevor3
VarsityShooter
Wrist_thick10

If you just want to look at pictures and don't care about their authenticity, Haggin11nhalf has a gallery of pictures of two or more enormously hung guys that he pretends to be. Another fake with good pictures is Extralargehung (exposed here).

By the way, though I'm flattered to have been mentioned, I don't think I belong on the list, as my dick's not even eight inches long.