sprinkle in a little "oh my god i had sex with a real girl look guys look at me she was real and we had actual sex im a god" and you've summarized my opinion of xkcd. thanks for the help.
I have exactly this problem with xkcd too --- girls apparently make hackers feel slightly squicky --- hilarity ensues! Let's have sex in a room-sized ball pit! Awwwww!
I don't find those two especially funny, just memorable. I read tptacek's comment as a general criticism of xkcd, without the implication that it must be funny to be good.