look up any word, like half chub:
 
1.
Acronym: Big Tits, Fat Ass
Whoa that bitch is all BTFA!
by pshik August 12, 2006
 
2.
Highly popularized acronym that most effectively captures the essences of excitement, surprise, happiness, or downright shock. It is to be used when one is "Blown The Fuck Away" by a particular event or circumstance.
"After dating for two years, my boyfriend came out as gay...BTFA!"

"She called ME a slut when her last two hookups were in a Denny's parking lot...BTFA!"

"My iPhone has a vuvuzela app so I can make it sound like the World Cup all year long...BTFA!"
by Jonesaaay July 08, 2010
 
3.
Beat that fucking ass
Bro I'm about to btfa on that hoe there
by spartan065 May 11, 2013
 
4.
Acronyme. Bad the fuck ass.
Friend of mine: Dude I just found 100 fucking bucks on the ground! LOL!
Me: Shit dude that's btfa!
by Lothian January 20, 2006