When did you know you were "grown" up?

[Betarulz!]

The thread about missing childhood got me to thinking about the stuff that I do enjoy about not being a little kid now. Like driving.

That got me thinking about those little times when it was like "hey, i'm my own person now"

So the question is, what little incident (not something major) made you realize you were really becoming more independent?

For me, and this sounds kinda stupid, but it was summer between my junior and senior year of HS. My friend got some awesome seats to the KC Royals game that afternoon, and so we drove out there, just hung out and watched the Royals win. What really struck me was that I just went and bought whatever type of food I wanted at the ballpark. All those times of having to ask my dad if I could get this or that were gone and it rocked!!! I probably ended up spending 20-25 bucks on food that day...