Mostly as a result of having worked together at a ridiculous number of places I've told probably a hundred people something along these lines.
"Never believe anything that comes out of Dave's mouth. Everything he says is bullshit."
And then he laughs because he knows I don't mean it as a bad way. I'm actually quite proud of his ability to lay out the most outlandish statement in an entirely plausible way.
However..... Sunday morning:
Dave: Do you want me to make you a pancake Fiona?
Me: You should say, "no thank you." Because it's nice of Daddy to offer even if you don't want a pancake.
Fiona: No thank you Daddy.
Dave: You should say, "No! I don't like it!"
Me: Don't ever listen to anything your father says it's all bullshit.