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2.
A bisexual male, one who claims to have sexual interest in both males and females, although most likely in males.
Chadwick always had a girlfriend throughout the years, but he continuously made some pretty gay comments, so we dubbed him a halfag.
by Stevie Y January 20, 2005
 
1.
$500 dollars, half a thousand dollars, five hudred dollars.
Ispent half a g on this couch.
They tried to charge me half a g more on that ^%$#.
by diezal February 14, 2010