Question

which activity can kids do but older people cant do

Answer 1

Announcing every emotion the moment they feel it.
Befriending a random stranger.
Questioning ALL THE THINGS (and all the people).

Answer 2

1. Undressing. In public.

2. Picking their nose and eating it. In public.

3. Picking their nose and wiping it on something. In public.

4. Picking their nose and wiping it on you. In public and in private.

5. Hitting, kicking, biting, pinching.

6. Walking in on someone else who is on the toilet.