The green Earth Pony chewed on the inside of his cheek a little, as had become a common habit when thinking about something. He passed the beer mug from hoof to hoof across the counter for a few seconds, and then perked up again. "Sounds like a good deal to me. I'm not the best at riddles, but I do like a challenge... is there any sort of buy-in, or is this more of a promotional thing for you to drum up business?" His blue-grey eyes shot a curious yet friendly look to the bartender, as the pony was still wiping his hooves in a seemingly nonchalant manner.