Hello! Under the title "Would You Like to Swing on a Star", it was a rough search. Found lyrics to "Swinging on a Star", and I believe it's the song you are seeking.

Swinging on a Star
(Bing Crosby)
Would you like to swing on a star?
Carry moonbeams home in a jar?
And be better off than you are?
Or would you rather be a mule?

A mule is an animal with long funny ears
Kicks up at anything he hears
His back is brawny but his brain is weak
He's just plain stupid with a stubborn streak
And by the way, if you hate to go to school
You may grow up to be a mule

Would you like to swing on a star?
Carry moonbeams home in a jar?
And be better off than you are?
Or would you rather be a pig?

A pig is an animal with dirt on his face
His shoes are a terrible disgrace
He has no manners when he eats his food
He's fat and lazy and extremely rude
But if you don't care a feather or a fig
You may grow up to be a pig

Would you like to swing on a star?
Carry moonbeams home in a jar?
And be better off than you are?
Or would you rather be a fish?

A fish won't do anything, but swim in a brook
He can't write his name or read a book
To fool the people is his only thought
And though he's slippery, he still gets caught
But then if that sort of life is what you wish
You may grow up to be a fish
A new kind of jumped-up slippery fish

And all the monkeys aren't in the zoo
Every day you meet quite a few
So you see it's all up to you
You can be better than you are
You could be swingin' on a star