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A name for someone who is chunky, stupid, slothful, and talks trash.
My cousin is an F. D. L. B. She eats pizza at 3 a. m. and still can't figure out how to use a phone.
That kid in class is an F. D. L. B. He fell asleep during the math test and drew a mustache on the teacher's face.
My boss is an F. D. L. B. He yelled at the printer for not working and then took a nap.