What is the oldest memory you can remember?

Hm... There's a couple of things that might be my first memory, since I don't remember how old I was when they happened. There's one from when I was three or so. I threw all the toys out of my toybox one by one in a search for blocks, and I decided to scare my mom for fun. So I crawled into the toybox and stayed there for a loooooong time, until she came looking for me. And it worked; I jumped out and gave her a bit of a start.

I also have vague memories of sitting on a blanket in the back yard, trying to get off it but crying whenever I touched the grass because I hated how it felt. So I was trapped on my little blanket island, and didn't like that one bit. There's also an even vaguer memory of being at my grandmother's house and trying to eat a fistful of grass and having my mom rush over and stop me. Both probably earlier memories than the toybox thing, but much, much less clear.

Jam it back in, in the dark.