Fancy nightlife establishments — when they're not using hand signals to secretly talk about you, they're doing it right in front of your face: with code words.
Mavis Batey, who as an 18-year-old university student helped crack the German Enigma code leading to several instrumental victories for the Allies, died earlier this week at 92.
CIA Codebreaker Decodes Civil War Message 147 Years Too late
A retired CIA codebreaker deciphered a 147-year-old message sent to Confederate Lt. Gen. John Pemberton while he was defending against Gen. Ulysses S. Grant's siege of Vicksburg. It reads, "JP - Kind of reconsidering this whole 'secession' thing. Sry! Peace."