if you have to say that you shouldn't look at it
No, I think if you want to post a comic in a thread unrelated to what the comic's about, you should provide at least some kind of explanation. Anyway, I went and looked at the thread, and as far as I can tell Oasis is right. A fan literally cannot cool your computer more than the air that will replace the warm air, unless its wet or something weird like that.
Not seeing the humor = it's not a joke? What.
There really wasn't a joke, it was just him being stuffty because he's wrong. He even said himself that it's just "dirty laundry".