Apparently there was a claim of 14" but not credited. The going rate for record claims is 10-12". I'd show you the link but it's a family site! Teehee!
I agree though, it does seem like you are the largest penis zippybungle! :-p
Many years ago an English tabloid newspaper reported that Errol Flynn had eighteen inches of uncontrollable flesh. At school we all thought it was his willy, but what else could it have been?