A Russian, An American, And A Mexican Walk Into A Liquor Store

The Russian buys a bottle of vodka, throws it into the air, shoots it, and says "We have plenty of those where I come from."
The Mexican buys a bottle of tequila, throws it into the air, shoots it, and says "We have plenty of those where I come from."
The American buys a six-pack of beer, throws it into the air, shoots the Mexican, and says "We have plenty of those where I come from."

Not sure if it's been posted, but it's the first "mean joke" I ever heard