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1.
One that excessively displays his homo-erotic taste for a specific denomination of Audis or the Audi name in general. Particularly of the A4 breed.
The HX_Guys of this world tarnish the incredibly masculine and brutal image of A4 owners abroad!
by Audi April 12, 2004
 
2.
verb, to babble incessantly about material possessions, to the point where it appears to be a sexual fetish.
I'm getting tired of hearing this dude HX_Guy about his damned car and
by RRLSi March 29, 2004