Rhyming Pattern

To prove a point, predict the word where you see a ____. It's easy. That's the whole idea.

I lead with my funny bone.
Not sure where that is.
Is it my feet?
Then I'll dance to the ____
Is it my elbow?
Then I will nudge my ______
If you found all these,
It must be in my ____.
They are Crackle and Pop
Especially if I ____