PW: A chiropractor.  How about the practice of chiropracty?  Or chiropractism?  A chiropracterer?

WG: chiropractitioneer

PW: chirogasm

WG: Chiropooper (when they force it out)

PW: chiroblumpkin

WG: chirocameltoeprator

PW: chiroshima…when the bomb drops.  chiroblumpkin wins