The story of Cain and Abel - Adam and Eve's two sons - is a Biblical meme from Genesis with which many are familiar. Now Clinton's pick of Tim Kaine as VP nominee has triggered all sorts of snarky alliteration and homophonic word play, around the name "Kaine" which is pronounced identically to "Cain."
Some favorites: Kaine and Unable, or even more apt, Kaine and Enable, making reference to Hillary's role as an enabler for Bill's misdeeds with a whole procession of willing and unwilling women. Then there's the "Democrats so blind they needed a white Kaine" snark.
Too much fun.