My wife and I met 35 years ago this month, and if you want to know the secret to our long-lasting relationship, it's because we still have silly conversations, like this one, where we got off on a tangent about scary movies...
Wife: I don't know if it was "Rosemary's Baby" or "The Omen."
Me: But it was one of those with a kid that's the spawn of Satan?
Me: How come we never hear a pleasant story about the spawn of a Nobel laureate?
Wife: Because "spawn" is always used in a negative connotation.
Me: What about when salmon swim upstream to spawn?
Wife: Well, sure, "spawn" can be positive when it's a verb -- but as a noun, it's always negative.
Me: Okay, good to know.