“Right, then, mate, terribly sorry for my unspeakable rudeness, and I do beg your pardon. I can only say that it was caused by my natural affront to the notion of her as my sister. Since I'll be shagging her tonight, you can imagine how I'd be distressed at the thought of rogering my sibling"
"You shmuck! The only thing you'll be shagging tonight is yourself!"
"You wanted sincerity, well, luv, I was sincere.”