Allan Sherman's parody of Down By The Riverside:

When you go to the delicatessen store,
Don't buy the liverwurst.
Don't buy the liverwurst.
Don't buy the liverwurst.
I repeat what I just said before,
Don't buy the liverwurst.
Don't buy the liverwurst.

Oh buy the corned beef if you must,
The pickled herring you can trust,
And the lox puts you in orbit AOK.
But that big hunk of liverwurst
Has been there since October First,
And today is the Twenty-Third of May.

So when you go to the delicatessen store,
Don't buy the liverwurst.
Don't buy the liverwurst.
Don't buy the liverwurst.
It'll make your insides awful sore.
Don't buy the liverwurst.
Don't buy the liverwurst.

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DON’T BUY THE LIVERWURST  By Allan Sherman https://www.youtube.com/watch?v=DqTDecGoMdo