There was a turtle by the name of Bert.
And Burt the turtle was very aleart.
When danger threatened him he never got hurt, he knew just what to do.
He ducked.... And covered.
Duck and cover.
He did what we all must learn to do
You, and you, and you, a you.
Duck and cover!!!!
(not that it will be guaranteed to protect you at all in any way.)
It's alright. It's about how the 1960s was trying to convince us that the us could win a nuclear war ducking and covering wouldn't rly help anything, we would be dead. It's on YouTube, look up "duck and cover"