"Casual Existentialist," because I'd say that describes me fairly well.
I've been wanting to change it for a while now, but haven't been able to think of titles that are funnier than previous ones I've had, namely "Thorny Chum" and "Basement Clown"
Mine has been "Sports-Minded Superstar" for the longest time. I feel like it works well for me and I have no intention of ever changing it at this rate, lol.