I got a couple of mild laughs out of this but honestly, it's just not that funny. Part of that, I think, is that it goes for the lowest hanging fruit, regardless of consistency. Yeah, Mulder's easy to lampoon as a loon, and the book actually does this quite successfully - except when it needs him to be rational, as when he's interviewing a series of people who think they've been abducted by aliens and suddenly, to make fun of them, the guy who's credulous enough to believe Barney the Dinosaur is eating children grows a brain. Likewise, when the aliens, who are the supposed compilers of these books, are brainstorming ways to undermine Scully's effectiveness, they focus on exploiting her religious beliefs (fair, that comes up a lot in the show), her sister's death (also fair, and the sequence with the Melissa-zombie was actually quite funny), but then it goes into 4-5 pages of fat and short jokes, making fun of her appearance, and... these aren't really things that Scully's ever been shown giving a damn about. I think the reasoning's gone: she's a woman, she must worry about her weight, that'll work. But it's that low-hanging fruit, and doesn't apply to Scully. Target her tanking career, that'd be funny. Target her dad's disappointment in her, make that amusing. Target her terrible clothes - that godawful pink and blue parka of "Darkness Falls." But satirise Scully, not some amorphous woman-shape in a trenchcoat. It's just all a bit lazy, really.

I've read far funnier fanfictions.