Yeah, the problem with Hotdog is you have to read what he says in a different way than normal people and most of the stuff he says is irrelevant, occasionally he says something relevant and doesn't even realize it. Reminds me of that adage about monkeys typing, eventually they would accidentally type something meaningful, but usually they're better at flinging poo.
Here are the exact clues fsh gave me. Still took me an hour or so, because poo flinging can get messy and I had to wash my hands a couple times.
Why don't you have mystery badge 6 yet?
Did you even try?
Are you searching for it?
Now you are overthinking it, go back to where you began and search you feelings today.
And I don't think Eric ever posted anything like that in the forums.
Yeah, reading comprehension is important.
If you don't get it, I have to tell futiles.
That's it, only leaving out the verbal taunts. Fsh never told me where to find it, despite my prodding and poo flinging. I actually stumbled upon it after checking something on another site, related, but not necessary for this badge.
I did notice in the change log that Eric made it easier to find. I have an idea what he did, but I probably would have tried the original anyway.
Now, as a final comment, if you have been paying attention I have literally told everyone how to find it, although with a couple extra words. Between the badge clue, my posts, and fshguy's explanation of how to read my posts, anyone should be able to find it themselves. This was one of the more elegant badges in design and clues, you'll get it once you find it.
For more clues, feel free to comment on my feed or visit my page. Once others figure it out, it will spread quickly, so if you get it, keep it to yourself for a bit.