If you didn't see the 1998 movie, COLORS, with Robert Duvall & Sean Penn, this joke will make no sense to you. - These two amino acids were swimming around in the primordial soup one day. Younger amino acid looks down and says, "Wow! Free electrons! Let's run down there and eat one of them." Older amino acid says, "No son. Let's get organized, and eat 'em all."