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Short for Quality Assurance. This is usually a group within a business that monitors the quality of work that it's employees are doing. More specifically with phone customer service work, they grade a certain amount of calls each month to make sure that certain guidelines and quality standards are being met.
That must've been a perfect call because QA gave me a 100%!
by YankeeGreens February 11, 2009
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Quad Anal, the act of having four men in one woman's ass. Requires four men and a woman.
Did you see her do the QA, that was sick!
by Eng May 09, 2006
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A notorious gang located in the north of Melbourne. The gang is also known as the Errol St Rollerz. This gang is renowned for its hustle. QA is known to be involved in murders, robberies, drug dealing, among many other criminal pursuits. The gang is notorious for its gang members' flamboyant use of the colours orange and black in their clothing. Its founders, Young Deezy a.k.a. Baby Crakz and lil' lou a.k.a da butcher, are rumoured to subject their ‘soldiers’ to gruesome initiations. Urban legends say that to be initiated, a new member must drive at night without his headlights on until someone flashes them. The gang member is then required to chase the car and kill the driver and any passangers.

Errol street hustlers (or the 3051 army) is one of the largest and most violent street gangs in North Melbourne, with an estimated 4-5 members. QA are known to have an intense and bitter rivalry with the King Street Killaz.
"Damn son, don't be walkin down Errol dis time of nite, don't you know dem QA thugs will straight up kill you fool"
by 3051soldier September 03, 2008
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