Elbows and knees

You have two elbows
You have two knees
Perhaps you've wondered why you need these
They can be funny looking there is no doubt
But here's how elbows and knees can help you out

When you're going for a jog
Or hopping 'round like a great big frog
Your legs must bend to do things like these
What does the bending is your funny knees

When you want to scratch your back
Or swing a bat to give a ball a whack
There is one thing on which you can depend
You need your elbow and your arm to bend

Singing elbows and knees
Elbows and knees
It sure is handy to have some of these
So elbows and knees I'm recommending
When arms and legs got to do some bending
When arms and legs got to do some bending

Hanging down from a trapeze
You need your legs bending at the knees
To brush your teeth or to comb your hair
You must bend your elbow so your hand will get there

Singing elbows and knees
Elbows and knees
It sure is handy to have some of these
So elbows and knees I'm recommending
When arms and legs got to do some bending
Talking 'bout elbows and knees