So the Zen master steps up to the hot dog cart 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 hot dog vendor puts the bill in the cash drawer, closes the drawer and starts to wait on the next customer.
"Where's my change?" asks the Zen master.
And the hot dog vendor responds, "Change must come from within."