Originating from the term 'afterhours.' The party that occurs after the bars close, usually circa 2:00am, usually involving techno music, fist pumping, and shots.
Dude we raged so hard at afties last night!
by Bneighbs July 26, 2010
A stealth breed of budgie
Where the hell has that Afty gone? I knew I should have electronically tagged it...
by Elbonio May 04, 2004