The act of earning money by being a girl willing to play Halo (a popular war-based video game) with lonely, lonely boys. Detailed in an xboxlive.ign article of March 10, 2010.
"I texted Shana but she couldn't come out, she's Halo-hooking to get some martini money for the club this weekend."
by zippedy-doo-da March 23, 2010