Fiona dumps Julian to take up with Bleys
Flora is regarded as a paragon of virtue, because she only goes out with 'youngers.'
A DNA test gives an impossible result - your DNA is a loop
Flora has words with Benedict about ‘morality’.
There is a character called Oedipus.
And he really means it.
Flora's middle name is 'Jocasta'.
Your brother is an uncle. To your grandson.
Merlin has a daughter with a crush on Corwin
You have to count up the generation gap using advanced calculus.
You learn calculus to do just that.
Your family tree resembles a shrubbery.
And you prune with a flame-thrower

You know your campaign is incestuous when…