Caporegime
i'd rather have water cooling than a girlfriend.
a lot cheaper as well
You just know that this guy is being serious, too.
I don't know whether to
or 
i'd rather have water cooling than a girlfriend.
a lot cheaper as well
or 
To be fair, that's not too bad what the OP wrote.
What really gets on my nerves is when someone calls their desktop background the "screensaver". I regard that as a much more basic mistake compared to watercooling misconception. Went on a training day only last week. Some girl there was jibbering on about having a photo taken of her with a celebrity and then put it on her screensaver.

Hehe, i never get tired of asking my technologically impaired g/f "where is the internet?" I get all sorts of amusing answers
We watched that IT crowd episode together :O

No. I happen to like smart women. Problem?
No, it's stupid. I'm not expecting that the OP's GF would understand the intricacies of water cooling (I don't) but to think it would somehow have a water cooler, as in what you get in an office, attached is stupid.