First, this joke is pretty damn old and hardly bernies.
Second, of course he shouldn’t have told the joke
Third, what, exactly, do you call a woman who has sex for money?

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“My little nephew came to me and he said, ‘Uncle, what’s the difference between a hypothetical question and a realistic question?”‘ Mac said toward the end of his routine. “I said, I don’t know, but I said, ‘Go upstairs and ask your mother if she’d make love to the mailman for $50,000.”‘

“Hypothetically speaking, we should have $100,000. But realistically speaking we live with two hos,” Mac said, delivering the joke’s punchline.