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Internet abbreviation of "Look Forward, Not Backward."

Used to dismissively avoid punishment or investigation of atrocious behavior.
"You..you just killed my puppy with a meat cleaver!"

"OMG, LFNB!"
by Xodolemipe April 16, 2010
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Jul 1 Word of the Day
sending two texts in a row without a reply inbetween.
Rachel: whats up?
Tessa: not to much! hbu?
Tessa: dude, i'm so bored.
Rachel: stop double texting me.
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