I was just over that threshold of legal drinking age the first time I bought a bottle of wine in a restaurant. The waiter asked if I would like it decanted, and I froze, totally unsure of what criteria should drive this decision. I stared, agape, then glanced at my date. She didn't know, either. "No, no, that's okay," I said, a decline-from-panic, and the waiter gave a shrug that read Hey, you're the boss, hoss.