Cocktail Tequila Bum Bum is a typical party drink. Pour tequila into a short, stable glass. Pour some iced champagne into it. Put your hand or a beer lid on the glass. Tap the glass once vigorously on the table so that the champagne foams up. However, if you have a glass of table in front of you, it is better to foam the cocktail with a spoon. Cocktail Tequila Bum Bum is drunk as fast as possible.