This is an old joke, but I've only just heard it.

"What did the Buddhist say to the hot-dog vendor?"

"Make me one with everything."

And then, somebody's later addition...

The hot-dog vendor makes him his hot-dog with all the trimmings, and says, "That'll be $7.50."

The Buddhist reaches into his saffron robes, extracts a $20 note, hands it over, and starts eating. The vendor turns to the next customer... but the Buddhist interrupts him. "What about my change?"

The vendor is unperturbed.

"Change comes from within."