Rabbi is taking a stroll in the park…on Pesach. He notices a blind man sitting on a bench, taking out a sandwich to eat for lunch. Well, blind as he is, the sandwich slips out of his hand and scatters all over the floor.
Feeling terrible for the poor blind man, the rabbi checks his pockets for anything worthy of eating that he might offer him. Since it was Pesach, all he could find was some matzah, but it was better than nothing.
Handing the matzah over to the hapless man, the latter grabs it and begins to feel it all over, examining it in all directions. After a few moments of this, he exclaims, “who wrote this nonsense?!”