So whatdaya think. Do you see the similarities between the first two rhymes that I posted and the "There's A Place On Mars" rhymes?

Also, these poems/rhymes seem similar in structure to the poems, songs, rhymes that substitute or trade one thing for another over and over again only to find that the traded thing is somehow also defective. I'm thinking of a song such as the {at least 19th century} secular African American song "I went to the river but I couldn't get across/so I traded my grey horse for a mule [or something or another]". I'm also thinking of the African American lullaby "Hush Little Baby Don't You Cry" [daddy's gonna buy you a mockin bird...].

Is there a name for these types of poems/rhymes?

They're not cumulative rhymes, right?

Is there a general name for this type of structural pattern?