It's the coin you give to the musician in the street.

It's food and conversation you share with the homeless guy around the corner.

It's the hug you give to your friend.

It's the seat on the bus that you offer to the old lady.

It's the door you hold open for the person behind you.

It's the last beer in your fridge that you give your unannounced guest.

The real question is:

What can't a #zap be?