One time, wanting to give the Rebbe enjoyment, he told the Rebbe that on Rosh Hashanah he had organized a beginners' service in his synagogue for more than 130 Jews who had no Jewish background.
"What?" the Rebbe asked, looking at Rohr intently.
Assuming the Rebbe did not hear what he said, Rohr repeated himself.
"No Jewish background?" asked the Rebbe.
"Go back and tell them that they have a background. They are the children of Abraham, Isaac and Jacob, Sarah, Rifka, Rachel and Leah!"