Two

Exchange with my two-year-old nephew, James, on the playground:

Me: James, please do not throw dirt.  It can get in someone's eyes.

James throws another handful of dirt.

Me: James, look at me.

James: (covering eyes with hands) I am hiding!

Me: (giggling) James, I can still see you.  Please do not throw dirt.

James resumes play in the tree stump.  Thwarted in his attempts to disappear, he discontinues the throwing of dirt.