Mrs. O is just the opposite: she often refuses to believe anything that comes out of my mouth, because she knows I like to yank people's chains.
So ... one night we when we still lived in Florida, we went fishing. And we're standing on the river bank with our poles, occasionally wading out to about knee deep in the water. And there's this low rumbling/croaking sound from just downstream. Mrs. O said something about bullfrogs. I said it might also be alligators, as it was mating season and they get very territorial and very noisy. Sure enough, she scoffed & told me she wasn't falling for my bullshit.
Fast forward about 5 years, we're watching some nature documentary about the Everglades. And they had a segment on alligator mating habits. Mrs. O's eyes nearly popped out of her skull when she heard a familiar low rumbling/croaking sound coming from the TV. "You really weren't kidding that night!"