Seriously in example sentence
"For a Squadron Leader - normally the only guy trained and equipped for navigation in a squadron and very hard to replace - to risk an expensive plane and himself to pick up a crashed fellow pilot, no matter how close a friend he is, in the face of oncoming enemy troops, is hard to believe, especially when they both have to share a cramped Spitfire cockpit - two into a Skyraider, OK, but a Spit?! Come on, this part of the film is a Biggles adventure, not fitting a film that one is supposed to take seriously!"