Beat it on a rock

This is song used to advertise toothpaste in 1997!
This is song of the snake
This the thick shall inherit the earth song
This is the song of the four freedoms
List them
Freedom of speech
Freedom of worship
Freedom from want
And freedom from fear
But this is ersatz culture
This song is called Deirdre C119
This is actions speak louder than words can express dance type song
This is fourteen men on a dead man's chest song
This is if all are good then who is best song
If he ties his body to the mast and his feet on the chest like anchors rest and he gazes into the sunset west and his body slumps into lifelessness
His hungry mind starts to digest a hideous song of facts undressed
With a hundred beaks pecks the flock
If he hopes to reach my dry dock
If he picks up the town hall clock
Beat it on a rock
He beats it on the rock
"Devil take you, mates, I couldn't care less
Nothing sucks more than success"
This is Homo sapiens' bungalow song
If you know the answer just press
But, if you fail the IQ test
If your head is a mental block
You're unprepared for future shock
This is they'll pick you up by the forelock
And beat it on a rock