1. Where you and your friends hang out:
At 18: In the general vicinity of your school.
At 25: The bar. YOUR bar.
CBS
At 30: At each other's apartments.
Fox
2. How you communicate:
At 18: Snapchat.
At 25: Texting.
At 30: Slack (or other form of "work" chatroom).
Giphy
3. What you talk about:
At 18: College.
Universal Pictures
At 25: What to do with your life.
Universal Pictures
At 30: No, really, what should you do with your life?
NBC
4. What you fight about:
At 18: Petty shit.
Paramount Pictures
At 25: Things you said when you were drunk.
MTV
At 30: Not much. And you're usually over it pretty quickly.
Fox
5. Drinking:
At 18: Definitely no drinking happening here!
Comedy Central
At 25: Booze. So much booze.
ABC
At 30: You drink the same amount, but more of it is wine now.
ABC / City TV
And it feels way worse the next day.
6. What you eat:
At 18: Whatever fast-food restaurant is closest.
Fox
At 25: Brunch and hangover food.
The CW
At 30: Home-cooked-dinner parties.
NBC
7. When you hang out:
At 18: Every single day.
At 25: Every weekend, most of the weekend.
At 30: Twice a month, if you're lucky.
PBS
8. How many people you think of as your good friends:
At 18: Between 8 and 25 people.
Fox
At 25: You've got a tight-knit group of four or five.
Syco Entertainment
At 30: Mostly just the one best one.
NBC
But by then, you'd rather have fewer great friends than so many just-okay ones.