- When you're choosing your food in function of their solidity/softness

- When people now are looking at you with the evil eye when you go in the same old clubs you used to frequent

- When you consider buying a house close to an hospital just in case

- When you don't remember anymore some people in your graduation journal

- When you stare at the tits of your daughter/boy's friend and realize it's wrong because they are your daughter/son's friend.