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The act of quickly ridding ones self of calories out the anus by use of laxative in order to lose weight.
Sally lost 2 pounds from anal bulimia before being weighed and taped.
by urfdawg July 21, 2011
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When food is so dirty, so greasy, so indigestion-inducing, that most of it along with the calories its loaded with, goes right through your system undigested. Mathematically related to its close cousin in economic theory, Giffen goods.
"Girlfriend, I can straight up eat buckets of KFC for and not pack on any pounds. That dirty bird flies right through me without making any stops until it gets to its porcelain watering hole. For real. It's like I got anal bulimia."
by Ballzinyerface November 20, 2018
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