Watch Benedict Cumberbatch and Keira Knightley's Super-Cute, Super-British Interview

Benedict Cumberbatch and Keira Knightley take a serious turn in The Imitation Game, the new biopic about computer pioneer and WWII codebreaker Alan Turing which premieres Nov. 21. Offscreen, however, the two actors have a playful friendship, with healthy doses of giggling and adorable British-isms. Yahoo Movies UK asked Cumberbatch and Knightley to interview one another and they delivered, right down to Cumberbatch’s terrible impression of Knightley’s famous pout. Watch the video above, and if you need a little help with the vocabulary, just consult our glossary below.

Posh — Upper-class. Ex. If you want to sound posh, pronounce the “r” in “shower.

Pride and Prejudice — The BBC miniseries in which Colin Firth emerges from a lake in a white shirt; Benedict Cumberbatch kindly paid homage to the scene for charity.

"Blue Steel" — Ben Stiller’s trademark pose in the film Zoolander; also the face Benedict Cumberbatch makes when he’s cold.

Alan Rickman — Actor who played Professor Severus Snape in the Harry Potter films; Benedict Cumberbatch’s best celebrity impression.

Bromance — A term used to describe close male friendships, like the one between Cumberbatch and Tom Hiddleston. Ex. “I’ve got loads of bros that I’ve got mances with.”

"Keira Knightley pout" — Knightley’s signature facial expression, which director Joe Wright forbid her from doing in his films.

West Ham fan — A fan of the West Ham United football club, a professional soccer team from the east side of London.

Sam Allardyce — The current manager of West Ham United, known for his old-fashioned “long ball” tactics.

Rockers — Rock stars, the preferred photobombing target of Benedict Cumberbatch.

Get a run up — To approach quickly. Ex., Always get a run up before you photobomb rockers on the red carpet.

Golf buggy — A golf cart, the preferred mode of transportation on movie sets. Ex., Keira Knightley was embarrassed when she fell off the back of a golf buggy in front of Ewan McGregor on the ‘Phantom Menace’ set.

Pengwings — Benedict Cumberbatch’s inexplicable pronunciation of the word “penguins.” See also: Penglings.