i had to spend the night with my girlfriend and her parents, so she and i went broing-747 in the bathroom to make it more exciting
"a drinking game in which one secretively drinks half of an [airplane bottle] of liquor every 7 minutes
"i had to spend the night with my girlfriend and her parents, so she and i went broing-747 in the bathroom to make it more exciting" What is the definition of "broing-747"?