E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Beaten with his own Staff.
Confuted by ones own words. An argumentum ad hominem.
Can High Church bigotry go farther than this? And how well have I since been beaten with mine own staff.J. Wesley. (He refers to
his excluding Bolzius from the Lords table, because he had not been canonically baptized.)