Why is nitrogen narcosis called The Martini effect

The Martini Effect meaning is the slang term for nitrogen narcosis. Where the name the “Martini Effect” comes from the fact that some divers feel drunk when affected by nitrogen narcosis. Narcosis is affected by deeper diving, and the deeper the diver, the stronger the nitrogen narcosis will be. Scuba divers have said that for every 10 meters (33 feet) of depth, this will have the same effect as drinking one Martini.