I'll tell you all this much for free, when I go to WDW, I'll tell my wife Disney-themed lies ALLLLL throughout the trip. Usually she doesn't fall for them...anymore. Once in a while though I'll get her, and if you overhear me and believe me, I take no responsibility for your actions.
But often my lies are fake-science based, because my wife is a science teacher, and I like to play ignorant with her, as if I know more than she does.
(Waiting on line for ToT)
Me: You know, if you throw a nickel out of the Tower at the top of the ride, so it goes outside of the tower, the turbulence from the drop will suck it back in, boomerang style, and if you miss catching it, it'll dent your head.
Wife: That's impossible.
Me: (sighing) OK, let me tell you how gravity and turbulence and vacuums work, so you don't embarrass yourself in front of your poor, poor students...
(NOT Science related, but while waiting on line for IaSW)
Me: You know, every day they take a different "robot" out and replace it with an actual child. Your job: Find him!
Wife: What do I get if I do?
Me: Deep muscle massage by Goofy (sotto voce) He knows how to do things I dare not describe here...OW (shortly after getting an elbow in the ribs)
(at the preshow for RnRC, when Steven Tyler does the "shocker" and I laugh out loud)
Wife: Why are you laughing? What does that mean?
Me: Oh, well, you know how Carol Burnett used to tug on her ear at the end of every show to let her grandmother know she was OK? Same deal, except Steven Tyler's doing it to his parole officer.
(At an extremely well-lit parade float at night, next to a father whose child is on his shoulders)
Me: You know, those are special X-Ray lights. If you put a kid right up to the lights you can see what he had for dinner.
Kid: (overhearing me, as was my plan) Bring me close Daddy! Put me on the lights!
Also, put me down as one of those people who couldn't give a rat's hinder if someone gets the name of an attraction or restaurant or theme park wrong. Just get *MY* name right when you brag to your friends that you know me.