Never underestimate a customer's ability to be ridiculous. They'll always surprise you with new ways to misunderstand simple things. U/N1k1B1k1e understands that all too well after a Saturday night run-in with a baffling customer . The person sharing this story writes that they worked at an underground go-kart arena. Some people in the comments section seemed confused by this phrasing. But it's exactly what it sounds like: you head to an underground race track where go-karts zip around at top s…