The practice of drinking a beer (from a longneck bottle), then drinking a wine cooler, Finally finishing it off with another beer.
Instructions:

1. Drink your favorite beer from a glass bottle. 2. Then Consume, what some may say is a girly drink, i.e. a bottle of Bartel's And James. 3. Finally, Drink another bottle of beer. Hence the term "Longneck Threesome"
by TheLoneSith June 8, 2010
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