There are a few hardcore body modification subcultures that are not well represented on BME, I think because they're drawn to mods maybe for different reasons and have little interest in anything other than their own mod subset (and thus don't discover BME). Anyway, Marco (he was on IAM but I don't think he is currently) that runs Extremecock and the Large Penis Support Group had the picture to the right on his own personal site.
If it's not obvious, the mod is extreme silicone injection — I'd say Walter (pictured) has had over a liter of silicone injected into his penis alone, which is a truly massive amount (his is one of the biggest I've seen). These are done usually by doctors in Mexico, but there are also US-based groups doing it both with silicone and hydrogel (which I've really got to get around to placing an order for). Anyway, I have a smaller gallery of this on BME in the implant section, but if you're intersted in it, Marco's sites have a lot more info on it than BME.
And I think that's the first time I've ever said that!