An arm and a leg

God looks down and notices that Adam is all alone while all the
animals have companions so he decides to create a companion for
man as well. He comes to see Adam and says to him, "Adam, you
are my greatest creation and therefore, I am going to create for
you the ultimate companion. She will worship the very ground
you walk on, she will long for you and no other, she will wait
on you hand and foot and obey your every command, and all it
will cost you is an arm and a leg." Thinking for a few moments,
Adam replies reluctantly, "I don't know God, an arm and a leg is
an awful lot, what could I get for, say, a rib..."