Not a game of "tag", but I told a stupid joke to a friend on a family vacation and variations of it have been going back and forth between us regularly for 49 y

Not a game of "tag", but I told a stupid joke to a friend on a family vacation and variations of it have been going back and forth between us regularly for 49 years now. It's actually in poor taste these days, so I won't post it, but we were 14 years old and thought it funny as can be!