In an otherwise civil discussion of “Downton Abbey’s” second season, actor Hugh Bonneville let loose on an interviewer who casually let it slip that she’d gone online and viewed a pirated version of the British period drama’s Christmas special, which aired in the U.K. in December but won’t hit PBS until Feb. 19. This turned out to be the wrong thing to tell the man who plays proud patriarch Robert Crawley.

“I wish you hadn’t told me you watched it illegally,” said Bonneville, choosing words that suggested he shouldn’t be writing dialogue for the nobleman otherwise known as the Earl of Grantham. “That’s really pissing me off. Shame on you. Be ashamed.”