Things that were in Jim's mouth today: A List

23 leaves
6 pine needles
2 clover flowers (white, not pink)
piece of bark
approx. 9 tablespoons dirt (damp, but not sopping)
3 sticks (varying sizes)
1/2 fistful grass (dead)

Can anyone tell me at what age people stop cramming random things in their mouths?

For the record, I did manage to stop him from swallowing most of these things, but I do believe he got at least a teaspoon of dirt and a few strands of grass down his little gullet.