A neighbor comes to Mulla Nasruddin house asking for his donkey.
Mulla Nasruddin said “I’m sorry, but I’ve already lent her to somebody else.”
Suddenly the donkey is heard braying loudly behind a wall.
“You lied to me, Nasruddin!” the neighbor exclaims, “Donkey is tied up behind the wall”
“What do you mean?” Nasruddin replied indignantly, “Whom would you rather believe, a donkey or your Nasruddin?”