Original Mitzvah

Check out this guy's right hand (on your left, duh).

He's holding a half eaten apple. Granny Smith, if you're wondering.
So what's so interesting about that, you wonder.

Here what:

I was walking along that road, and I happened to notice an apple about 10 feet in front of me. This bochur did too, but instead of just noticing it, he picked it up and placed it on the wall to his right.

Terrific!