I think that the 2 that will come around and bite actives on the butt in a few years are "You don't understand..in your day, I'm certain that no one ever wanted to drink/have sex/whatever," and "Hahahaha! Look at the hairstyles on your composite!"
When I advised my chapter in the eighties, they had a great time laughing at our seventies composites with pictures of our long, straight hair. I was visiting the chapter last year and some girls were laughing and pointing at an old composite. Guess what--it was from the exact year that I was advising and they were laughing at the poufy hair of the day.
What goes around comes around.