I'm trying to remember where I saw a Twilight Zone-like show about a man who hears increasing percentages of words swapped out for other words, until everything becomes incomprehensible to him.
It started with his wife saying that they should name their soon-to-be-born baby "Bumper". He is incredulous, and asks her what she's thinking, while she's insisting it's a perfectly normal name. He is then at work, and his co-workers ask if he wants to go out for "dinosaur" (instead of lunch). He tries to correct them, and they don't understand what he's saying. At the end, he's trying to relearn language by looking at a children's book, where the pages and pictures (to our eyes and his) don't match up at all.
Saw this a long time ago, and can't remember where...new Twilight Zone? Tales From the Crypt? Tales from the Darkside? Somewhere else?