Joke Decoder (panel 32)

Beyond X-ray markings.

There are certain chiropractic technique systems that teach how to mark on an x-ray to see if a subluxation exists.  Sort of a controversial practice – at least at LACC.  We were taught that subluxations can not be seen on x-rays.  This cartoon takes this practice one step further.  Vert is scoping Verta with a precision construction instrument, and emphatically blurting out that he sees a PRS at L2 [a fancy way of saying that L2 has a subluxation that is stuck backward with the right side up].