Ah, but it does scan, in the tune associated to "She was poor but she was honest."

That said, dynasty has to be sung fairly quickly. (Comedy is about delivery and cramming syllables is usually a prelude to a punch line.)

He was poor as a banjo-ologist,
Finding rhymes where they just don't scan,
He needs knob gags to make them funny
But Pam Ayres is his biggest fan.