Short for Big Fat Tub-a-lard Disease Syndrome. It refers to the inescapable condition that many people face when reaching their 20s where they let themselves go and double or even triple in size.
Dude, I just saw Melissa for the first time since high school and she caught a major case of B.F.T.D.S. She weighs like 3 bills now!
by jeru411 May 28, 2013
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