After the non-stop chaos of your 20s, entering your 30s can feel like a soothing wave of calm. You're no longer a baby adult figuring out the basics of rent, cooking, and interacting with others, but you're still young enough to have energy to try new things (at least in theory).
On the other hand, however, being in your 30s can feel deeply weird as the full, weighty reality of adulthood hits you like a ton of bricks. You no longer can hide behind the adolescent adulthood of your 20s, you have to start paying more careful attention to how you treat your body, your money, and the nature of your relationships.
There are lots of jokes to be made about being in your 30s, and the internet is full of them. So whether you're way past your 30s, you're in the middle of it, or you're peering into your future, these tweets will hopefully give you laugh.