If you want to worry someone who has not been in the car with you before, just say, "I am going to try something in a minute, I saw it in a cartoon but I think I can do it".
A recent believe it or not moment which happened to me was Grand Final day, Bulldogs supporter man and boy, my wife and I went to a Grand Final barbeque. After showing a group of women at a wedding reception some years ago how a one armed man counts his change I have always agreed to take it steady on the drink, but not this day. Decided I would watch the game on a small TV in the kitchen, everyone else was watching the big screen. Two young ladies came out and joined me and we got into a conversation about beer, after a few minutes noticed my wife looking daggers at me, and was trying to decypher what she was mouthing. Realised I was being spoken to by one of the young ladies, I asked her to repeat the question. She asked how many had I had, I replied 3 or 4 could be 5 to which she seemed bemused and asked how could I not know. I replied well the first 2 or 3 went quickly before I get into my stride and take it easy. It turned out that while I was watching my wife the conversation had turned into partners and divorces.