Short for "Blacked The Fuck Out," generally referring to a period of memory loss due to excessive alcohol consumption.
Friend 1: So, how was your night last night?
Friend 2: I don't really know, I BTFOed before we even left for the bar.
by Kbizz December 13, 2006
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Best the friend of

As in, you're the best of friends.
Ray: Anthony, you a stupid
Anthony: Ray, btfo. Because you're my best friend
Ray: btfo you too. Get in my pants
by That Guy With The Face June 24, 2019
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Anne: Don't you wanna try on these leggings, John?
John: BTFO my face with that shit.
by goyo January 23, 2018
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AOL slang for "Back the fuck off." Usually used in conjunction with other internet short hand or "l33t" termage.
by Matthew Darke February 19, 2003
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Btfo - As in, Back the fuck off.
"Everyone just needs to btfo right now."
by quarterprime September 8, 2011
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Suzie got BTFO by something trivial she didn't agree with and started screaming "Get this hate speech off this campus!" In the middle of a crowded auditorium
by breakaction January 13, 2017
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