The mysterious slash

Anne Curzan in the Chronicle of Higher Education:

Two weeks ago, one student brought up the word slash as an example of new slang, and it quickly became clear to me that many students are using slash in ways unfamiliar to me. In the classes since then, I have come to the students with follow-up questions about the new use of slash. Finally, a student asked, “Why are you so interested in this?” I answered, “Slang creates a lot of new nouns, verbs, adjectives, and adverbs. It isn’t that often that slang creates a new conjunction.”
Let me explain. Lots of us use the slash (/) in writing to capture two or more descriptions of the same thing, with a meaning something like “or,” “and,” or “and/or”—e.g., “my sister/best friend” or “request/require.” The slash typically separates two things that are the same part of speech or parallel grammatically; and we can say that slash out loud if needed: “my sister slash best friend.”
Now I wouldn’t write that phrase down that way, with the slash spelled out, but students tell me they now often do. A student kindly sent me some real examples from her Facebook chat (shared with her permission):
1. Does anyone care if my cousin comes and visits slash stays with us Friday night?
2. I have been asking everyone I know in the Chicago area if they’re going slash if they’d willing [sic] to let me tag along slash show me around because frankly I’d have no idea how to get around Chicago on my own....
If the story of slash ended there, with a perfectly logical semantic extension of slash from its more conventional use, I wouldn’t be writing about it here on Lingua Franca. But for at least a good number of students, the conjunctive use of slash has extended to link a second related thought or clause to the first with a meaning that is often not quite “and” or “and/or” or “as well as.” It means something more like “following up.” Here are some real examples from students:
7. I really love that hot dog place on Liberty Street. Slash can we go there tomorrow?
8. Has anyone seen my moccasins anywhere? Slash were they given to someone to wear home ever?
9. I’ll let you know though. Slash I don’t know when I’m going to be home tonight
10. so what’ve you been up to? slash should we be skyping?
11. finishing them right now. slash if i don’t finish them now they’ll be done in first hour tomorrow
The student who searched her Facebook chat records found instances of this use of slash as far back as 2010....

 The innovative uses of slash don’t stop there either: some students are also using slash to introduce an afterthought that is also a topic shift, captured in this sample text from a student:

12. JUST SAW ALEX! Slash I just chubbed on oatmeal raisin cookies at north quad and i miss you
This innovative conjunction (or conjunctive adverb, depending on how you want to interpret it) occurs, students tell me, even more commonly in speech than in writing. And in writing, it is often getting written out as slash, even in electronically mediated communication, where one might expect the quicker punctuation mark (/) rather than the five-letter word slash.
Slash is clearly a word to watch. Slash I do mean word, not punctuation mark. The emergence of a new conjunction/conjunctive adverb (let alone one stemming from a punctuation mark) is like a rare-bird sighting in the world of linguistics: an innovation in the slang of young people embedding itself as a function word in the language. This use of slash is so commonplace for students in my class that they almost forgot to mention it as a new slang word this term. That young people have integrated innovative slash into their language while barely noticing its presence is all the more reason that conjunctive slash might have staying power.