Of the ~206 bones in the HUMAN-body,

… we only NEED three "MAJOR skeletal-parts":

-- a WISH-bone

-- a BACK-bone

-- a FUNNY-bone   .

(… Those ALL are ACTUAL HUMAN bones!

I didn't JUST use 'em for the ironic HUMOR.)

P.S. To go along with the "BACKBONE", you're gonna NEED a pair of (METAPHORICAL/FIGURATIVE) "BALLZ"!

...