Here is a Moscow Mule mug made for the El Rancho Vegas by the "Cock n' Bull" company. Reverse side has a kicking mule and Moscow above it and mule below it.

Moscow Mules were popular in the 1950's although it originated in California in 1941. They consisted of Vodka, lime juice and ginger beer. It has been said that they don't taste right unless served in a copper mug.

So that's your "cock n' bull" story for today.