Fat experiences

For some, the answer will be, "since birth I guess." But for those who haven't always been heavier, when was the moment you realized you crossed over into being considered fat?

I remember a few years ago the first time my stats listed me as "overweight" on an online BMI test thing. At the time alarm bells were going off, and I was berating myself about how I could have let myself go that far.

Right now I'm 10+ lbs past that point, and half heartedly trying to diet/exercise myself back down to being just *a little* overweight