That’s my criterion for whether a joke is “good”. Not necessarily “funny” to just anyone, but potentially funny to the right audience.
Recently, there was a Pit thread in which the Lindy Chamberlain case was referenced. I read it too late to comment, but what I thought at the time was that to me, dingo/baby jokes have never been funny. Not because of the subject matter, but because I’ve never known of anyone making a clever one. No plays on words; no misdirecting setups that cause the punchline to take the listener by surprise; in fact, no punchlines at all.
Joke I heard shortly after Jeffrey Dahmer was arrested:
“He’s out on bail, but it cost him an arm and a leg.”.
Some people were, for whatever reason, unable to find any humor in the Dahmer case. Doesn’t mean they lacked a sense of humor, but it doesn’t mean that joke is “bad”, meaning no humor value. At the time, I found that joke to be clever, although it didn’t make me LOL; I was still trying to wrap my mind around the idea of his crime(s). But I did appreciate the play on words. And more than ten years on, I now get a chuckle out of typing it. (Don’t flame me, please!)
Far Side cartoon published shortly after A Cry in the Dark was released in the US (I see no need for a spoiler):
Picture: Side view of a wooden fence. One one side, a daycare center with children in cribs (outside?). On the other, a dingo farm, with dingoes standing on hind legs to peer over the fence. Caption: “Trouble brewing.”
Well, ha ha. Not offensive to me, just pointless. And typical of jokes “inspired” by the Chamberlain case: juxtapose a dingo and a baby, or several of each, and leave it at that. If I were a mother, I’d probably never find any such jokes funny, but I don’t think I’d be stirred up enough to be offended either.
And Baldwin, I do think the joke in the OP is clever. “A dead baby” isn’t a punchline. You don’t know how the baby died, and there’s no implication that it’s the woman’s own baby. “Crib death” describes a specific situation, and ties in with the “at night” clause in the setup. But hey, if you don’t find it funny, you just don’t.