Interesting find Jo. What I find odd is that the guy with the biggest penis was meant to be 13.5" and that's more like a firehose then a cock. Maybe I got it wrong and the chap I am referring to is the guy with the largest penis in the porn business, correct me if I am wrong.
Just found him on Wikipedia: Jonah Falcon
Jonah Falcon - Wikipedia, the free encyclopedia
Apart from that? Christ, imagine, 24", that's two feet long. You'd happily outsize a donkey with that. I think I'll stick with what I've got.