bashing the bishop

Verb

bash the bishop (third-person singular simple present bashes the bishop, present participle bashing the bishop, simple past and past participle bashed the bishop)

1. (idiomatic, slang) To masturbate by stimulating one's penis.
   • “Hello, Gladys,” I said, shaking her by the hand. “Joffy here used to bash the bishop so much when he was a boy we all thought he would go blind.”2003, Jasper Fforde, The Eyre Affair