I recently heard about something that would be roughly translated as “uncle's jokes” (the Japanese word for it should be something like 伯父ネタ or 伯父ガル but I can't remember correctly what I heard the only part where I am sure is that it started with 叔父/伯父).
Basically, it is just a play on words (by playing on the phonetic similarities of different words). Right now, I am only able to remember one.
猫寝込んだ。(ねこねこんだ)
My question is how is it called and would you know some more?