Pronounced "R-hack," it stands for Random Hot Asian Chick. Usually utilized to add some "diversity" into a TV show, movie, or commercial, but in reality, just a random hot girl that has no particular reason to be there. The RHAC is the easiest cop-out for adding diversity, since nearly everyone likes hot Asian girls.
"Wow, that girl on Titus was a total RHAC."
by teekaycee September 16, 2008