From Mad Art Lab, an excerpt from an ode to the kidney as a new symbol of love:
… Offer an organ you can actually spare
One that works hard, but is somewhat less rareAn organ whose measure is greater than wealth
And when shared can invigorate healthFor true love, if we may call it that
Gives of itself and expects nothing backSuch a love may be given, but also rejected
For love is like antibodies and very selectiveSo if love is something you want to give free
Select as your symbol of love the kidney(via Mad Art Lab)