Origin

• The term was first used in medieval times, when people referred to the "hair of the dog that bit me." During this time, people believed they could counter or cure the effects of being bitten by a rabid dog by placing that same dog's hair in the wound.

Types

• A typical drink for hair of the dog is tequila, Irish whiskey, Tabasco sauce and salt. It is served in a shot glass.

Potential

• Hair of the dog does work to some extent, according to The Phrase Finder. It may temporarily relieve hangover symptoms, but they will return. The best cure is don't drink to begin with.