Someone asked me why spare ribs were so called. They are not 'spare' because they are extra, or thin, or any other meaning of the English word spare, but the name is a modern version of the original 'spear-rib', a cut of meat once roasted on spears. The word comes from the Middle German ribbespêr. The OED also has the entry ribspare, a rarer form of the same thing, with citations from the 1630s to the 1930s.
There was a very influential feminist magazine in the 1970s/80s called Spare Rib. The name was a pun on Eve being created from a rib of Adam, as told in Genesis 2 (this is the King James version):
21 And the Lord God caused a deep sleep to fall upon Adam, and he slept; and he took one of his ribs, and closed up the flesh instead thereof.
22 And the rib, which the Lord God had taken from man, made he a woman, and brought her unto the man.