Can you imagine...

...what it would be like if we could borrow body parts from one another just like the way we borrow clothes?

Hey, can I borrow your hands? Mine need to be manicured an don't do not have the time.

or

Hey, can I borrow your head as I have to appear for an exam in a subject that you are an expert in?

or

Please can I borrow your boob as mine are a little too small or big etc.

It would be fun and interesting to watch this kind of scenario.