used for expressing disapproval US,1972 A signature line of Colonel Sherman Potter on M*A*S*H (CBS, 1972–83). Repeated with referential humour.
As far as I am concerned this is a bunch of—as Colonel Potter from MASH would say “Horse Hockey” or “Buffalo Bagels.” — Steven Wunderink, MindingYourSpiritualBusiness, p. 98, 2003