- Ho Yay: It's Better With a Man is an entire song dedicated to it.
- Les Yay: Phoebe and Sibella, depending on how they're played, have their moments during "That Horrible Woman".
- One-Scene Wonder: Major Lord Bartholomew D'Ysquith, played by Jefferson Mays in enormous fake muscles, is killed in the same scene he's introduced.
- Ron the Death Eater: Sibella's biggest problem with her husband Lionel Holland is simply that he's boring. Fan interpretations of him range from Jerkass at best to Domestic Abuser at worst, usually to justify having Monty kill him in order to get Sibella out of her marriage.
YMMV / A Gentleman's Guide to Love and Murder