when your back is hurting so damn much;
you feel like you're having a heart attack but it's a back attack!
"My f*cking back, i think i'm having a back attack!"

"my 67 year old grandfather was having a back attack when his cane fell"
by DORO twistaa April 15, 2009
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When a person walking in front of you appears to be super hot, but then they stop to turn around their face is butt ugly.
Dog check out that dime piece with the midrift and mini skirt up ahead, yeah lookin pretty hot. Oh wait she's turning around... Aweee, Back Attack!
by deanrendar January 21, 2011
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when someone suddenly backs off after realising they are in a situation they can't handle.
Joe had a fall-back attack and ran from the fight after he realised how big the other guy was.

Skydiver1: I didn't think we'd be up this high.

Skydiver2: I can't jump. I think I'm having a fall-back attack.
by St. Kae May 8, 2009
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much like the houdini..but this technique uses a bit different approach.

It is when you a screwing a girl in the doggie possition and right before you cum you gargle up a huge loogy and spit it right on her back..when she turns around and glares at you for the gross loogy you pull out and cum attack her face...hence the look back attack
I tied the look back attack on christians girlfriend last night..my aim was dead on
by enigmatic21 March 5, 2007
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When one is ready to move forward with an action
"I am ready to come back attack smack in the back that hoe tonight!!"
by e-boogie August 10, 2006
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Term used for the attachment of the nucleophile in an SN2 reaction to kick off the leaving group. In slang, it means to fail a test or have a lot of difficulty on a test, especially an organic chemistry test.
That orgo test just back-side attacked me, SN2 style.
by synchrohobbit November 20, 2006
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The assault of one's testicles from behind. Generally, the victim is bent over, however a standing attack up the legs is also commonplace.

Often times, the assailant will yell "back sack attack!" either at contact, or after the strike is complete.
Winding up for a kick, Ben positioned himself behind a bent-over Matt. Using mostly the flick of his foot unto the scrotum, Ben yelled "Back sack attack!" before Matt ever got the chance to react. Devolving into his fetal position, Matt sat writhing in pain.
by MrPistachio February 9, 2013
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