The El Gato Margarita.

1/5 Cuervo Gold
1 bottle any brand Margarita mix

Take big swig of Cuervo and hand bottle to friend. Pour about 5 ounces margarita mix down the sink and pass mix to friend. Friend takes big swig of Cuervo and pours about 5 ounces of mix into the sink.

Continue until bottles are empty or resume drinking after making friend scream "uncle" while kicking his ass in the backyard.
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I swung, therefore, I was