The fic part is treated as understood. (Sometimes, I do see "slash vid" however.)
Hmm. In my head it's how it's separated from fanart and vids. I may be projecting, though. I have very little interest in slash fanart, so I do care about the subdivision.
Googling the term gets 161,000 hits, so it's not rare.
Hmm. I didn't explain well - I don't mean talking about slash, but about the particular phrasing. I see a lot of people with no knowledge of fic-producing fandom who use the whole phrase "slash fic" as a kind of freestanding thing. "OMG Y'all! Someone posted A SLASH FIC about Hardison and Eliot! Can you believe it? HAR!" Within fic communities (and I'm phrasing a little awkwardly to include the range of readers/writers/reccers etc), the tendency is to talk about fic as the thing, with slash/het/gen as markers, often among a pretty dizzying array of other subdivisions: "I'm having trouble finding good Leverage fic I haven't read; I'm mostly into slash or OT3s, gen is good too, but I'm kinda squicked by Nate/Eliot...." Slash is absolutely an essential part of the classification, but the particular phrasing in the first example (which I sadly hear a lot outside of my lovely pieces of internets) always sounds to me like someone who doesn't know the culture.
I did read some good Slash slash once.
Cereal:
Much like the epic Journey fic I was reading, I got to it by mistake.
Nah, having gay romance/relationships. Sex isn't required.
store-brand granola: I love your willingness to follow through on your epic mistakes. After all, someone has to report back about these things.
How about Guns and Roses and Johny Cash? Slash Cash slash?