They mean to say that it is no disgrace when one has to work. Work is noxious and not to be done. Therefore we Jews don't work, but mostly engage in commerce. Gentiles are created to work. A Jew should neither plow the field nor plant grain.
Commerce is far more bearable than tilling the soil.
The rabbi laughs. You've learned very well. But I know another Talmud passage that you must learn. He opens the Talmud. They must plow, sow, weed, dig, reap, bundle, soft, and grind.