You refer to people your own age as ‘kids these days’
Your high school grad sweater no longer fits your gut
You have more hair on your back than on your head
You begin stories with the expression ‘back in my day…’
You take naps
You used to live for the weekend
You have to take so much medication that you’re on a first-name basis with all the pharmacy clerks in town
People your own age call you ‘sir’ and give you their seat on the bus
You don’t remember the last time you had a hangover
Looking up slang and acronyms on the internet
You make sure that all the lights have been turned off before leaving home
You start going to the doctor