Kidding a Kidder
“Kidding a kidder” (or “you can’t kid a kidder”) means you can’t fool someone who is themselves skilled at deception or joking. A trickster sees through another trickster’s tricks. “Kid” as a verb meaning “to tease or deceive playfully” and it emerged in English slang in the mid-1800s, likely from the noun “kid” (young goat), by analogy, with the idea of playfully “kidding around” the way a young goat frisks about, or possibly from the…

