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The Jabroni Quotient is how many douches from Jersey, NYC, or Connecticut show up somewhere and turn it into a disaster.
The bar got a Jabroni Quotient of 90% when 10 guys showed up and started a fight over who had the better pizza.
The town fair had a Jabroni Quotient of 85% because 12 guys showed up and took all the hot dogs.
The office had a Jabroni Quotient of 70% when 6 guys from New York showed up and made everyone late.