More on Caught Napping from Infoplease:

• Caught Napping - Caught Napping (To be). To suffer some disadvantage while off one's guard. Pheasants, hares, ...
• Gloves - Gloves are not worn in the presence of royalty, because we are to stand unarmed, with the helmet ...
• Dictionary of Phrase and Fable: C - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "C"