Don't worry about your age! You're 20! You're still so young! And who tells you you can't act like a teenager just because you happen to be a year older?
I know of a 75 year old woman who still goes to clubs to dance and drink whiskey. In Sweden there's a 60 year old priest who's a big fan of techno. You can see some of his incredible dance moves
here.
Or how about this amazing 89 year old woman who decided a few years ago that she would start traveling the
world.
Another example is
Lyn Slater, who became a fashion icon at 64.
Here's a
video of a supercool dad who decided to build a rollercoaster in his backyard.
There's so many people out there who's crusing the norms and not "acting their age". Age is just a number, don't let other peopled expectations define you.