Question: fun things to do on your eighteenth birthday?
Answer: You're an adult! Go out for brunch. ...  Do some taxes. Talk about the weather. ...  Or build a pillow fort and have a movie marathon. Apparently that's a very grown up thing too… ...  Book an outdoor activities session, like zorbing or paintballing. ...  Have a spa day. ...  Swim in the sea, if it's safe. ...  Hire a limo. ...  Throw a themed party.