What jokes have you made because of ignorance?

About three years ago, I got my driver's license by perseverance, and then my father gave me money to buy a car. In order to secretly save 20 thousand yuan, I changed the original automatic gear to manual gear. On the day I picked up the car, I refused the help of my good friend and decided to get a new car for the first time and drive home by myself. On the way, I described it as "the fear of my servant" in one sentence. After driving for about 20 kilometers, I was urged by the car horn at the back for countless times and turned off the engine for countless times (conservatively estimated more than ten times). When I got home, I was soaked to the skin. That's not the point. The point is to refuel the next day (the new car carries little oil) and can't find the mailbox (because it's a manual gear, the fuel tank doesn't open automatically). I turned on the headlights, windows, wipers, skylights and dual tone lights. Looking at the helpless expression of the oiler, I opened the door trembling and said, "Why can't I find the fuel tank in this broken car my friend bought?" The oiler ignored me, just silently walked to his seat and opened the fuel tank.