It is near Passover and this Rabbi is sitting on a park bench eating a piece of Matzah bread. Beside him is a blind guy who has seen better days.
The rabbi says"That poor man looks hungry and since I am a man of God, I should do something to ease his pain."
So he breaks off a piece and hands it to the blind man.
The blind man holds it for a few seconds and then says"Who wrote this *****"