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Another word for 'darn' if you're speaking in a nerdle turtle language.
person 1: check mate!!

person 2: oh fiddly foddly fatl. i'm doomed!
by fatl-creator February 06, 2010
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Taking a β€˜fat L’ means β€˜taking a fat Lost.’ Not mostly used by population. It is more likely to be use when people are talking about games or sports.
1. The team took a fat L. / The team took a fat lost. / The team lost by a big difference of points.
2. Took a fat L.
via giphy
by Mr. wut’s grammar? October 10, 2018
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