Zen Master Hot Dog

The Zen Master is visiting New York City from Tibet. He goes up to a hot dog vendor and says:

- Make me one with everything.

The hot dog vendor fixes a hot dog and hands it to the Zen Master, who pays with a $20 bill.

The vendor puts the bill in the cash box and closes it.

- Where's my change? - asks the Zen Master.

The vendor responds:

- Change must come from within.