So the married couple walks in. The shopkeeper says to them "I have some special sandals I think you'd be interested in. They make you wild at sex like a great desert camel."
The wife after hearing this is really interested in buying the sandals, but her husband feels he really doesn't need them, being the sex god that he is. So the husband says to the shopkeeper, "How could sandals make you into a sex freak?"
He replies "Just try them on."
The husband, after much badgering from his wife, finally concedes to try them on. As he does, he gets this wild look in his eyes, something his wife has not seen in many years; raw sexual power. In a blink of the eye, the husband rushes the shopkeeper man, throws him on a table and starts tearing at the guys pants.
All the time the shopkeeper is screaming "Stop, stop! You've got them on the wrong feet!"