Hand-in-Waistcoat

The hand-in-waistcoat was a gesture commonly found in men's portraiture during the 18th and 19th centuries. Napoleon I of France was most well known for the gesture and is readily associated with this gesture because of the several portraits made by his artist, Jacques-Louis David. The pose originates from classical times — Aeschines, founder of a rhetoric school, suggested that speaking with an arm outside one's toga was rude.(source: Wikipedia)