I know it looks strange, but that’s how I would have said it. When I wrote it, it looked funny, kind of like I just wrote ‘it’ twice in this sentence. There really isn’t anything that that guy won’t eat. Let me try it with just one ‘that’ ... There really isn’t anything that guy won’t eat. Hmm... I guess it’s ok with one, but I’m liking two at this moment. I’m not, and never have been good at such things. That’s why I’m on imgflip and not some fancy PHD think-tank site.
Remember, this is a meme about some clod eating his beard, lol :-)