It stands for something that really really looks a plain nail that really needs some descent hammering...
Can't Accept Neurodiversity
Can't Accept Neurodiversity
I think that's the best one so far.
I keep thinking of the issue of Doom Patrol where the men from N.O.W.H.E.R.E come to kill Danny the Street. The agents of N.O.W.H.E.R.E talk in acronyms for nowhere, stuff like "Now Our Weapons Hanker Eager Recognizing Eccentricity" or "No Obstruction Will Hamper Eminently Righteous Endeavors."
In explanation, The Doom Patrol is a DC superhero team that was written by several writers, but the only important one was Grant Morrison. Grant Morrison's Doom Patrol is known for it's really weird factor, the villians they have come up against include the Scissormen, who don't really exist and The Brotherhood of Dada, who want to make the world really, really weird and uncordinated and surreal, they had a painting for awhile that ate Paris.
The Men from N.O.W.H.E.R.E are an organization that is bent on keeping the world free from quirks or any weirdness, and so they are automatic opponents of the Doom Patrol that embrass weirdness to the point that the world isn't destroyed.
Danny the Street is a sentient street that has the power to teleport himself to any part of the world. We know that Danny is a male because of the various male oriented stores that are on him, such as an army navy store and a hard-ware store. However, Danny the Street is decorated in a femine fashion "fairy lights and lace curtains," which means that he is a transvestite.
Sorry about the tangent[/align][align=justify]
Never mind that it's an acronym. I find it amusing because in the US, the word "can" is occasionally used as a slang term for "butt". Keep that in mind for when you've got an active counter-campaign going against that organization. Call it "Ram it up your CAN" or something like that.
I believe "can" is also a US slang word for "toilet". I don't think CAN would want their acronynm associated with the idea of toilets but then again, maybe nobody there got the connection.
That is absolutely correct, though I don't hear it used that way very often these days.
But if they wanted their acronym associated with butts and commodes, it wouldn't be much fun pointing out the connection to them, now would it! (e.g. When getting in the car with others after a protest, say something like "Stop at the nearest gas station, I gotta use the CAN, man." loud enough for them to hear it.) 
Oops! I guess it should be -
Curebies Are Nags...
Now I See The Need For Editing
Clueless Arrogant Neurotypicals