Chiropractic as a noun

Last time I checked the word chiropractic was an adjective describing, ahem, doctor.
Am I crazy or has every chiropractor decided to just make themself look like a total non-schooled, back crackin’, Spine twistin’, " We don’t need no stinkin’ grammar classes! We’re freakin’ Chiropractic!" bone monkey?
school of chirpractic what?
Doctor of Chiropractic what?
:smack:

The last time you checked? Just where was it that you did this?

url=http://dictionary.reference.com/search?q=chiropractic]dictionary.com

One more time.

dictionary.com

At least since 1903.

From the OED.

Who you gonna believe? Me or that bastard O.E.D.?