Bad tequila, like Jose Cuervo is the devil's drink and will cause you to do things you never would at any other time.
Good tequila like Don Julio 1942 is smooth, tasty, mellow, hangover free, and will make you sit back and go "Duuuuuuuuuude."
Good tequila like Don Julio 1942 is smooth, tasty, mellow, hangover free, and will make you sit back and go "Duuuuuuuuuude."