Obviously I haven't seen the work your BF does, but the airbrush jobs I see here are usually just, well, tacky.

Still, when I think of "airbrushing", I can't help but think back to that old Tom Green Show episode where he paints two chicks eating each other out on the hood of his parents' car. The car was named "SLUTMOBILE" and it was indicated in big letters under the rug munchers.