Ok, I don’t know if it’s an original one… but on the way to Anna’s piano lesson, JJ started off the conversation that soon turned into a [repeating] joke.
JJ: Y-E-S spells ‘yes’.
Anna: Yes, it does spell ‘yes’.
And they kept on repeating and then soon laughter ensued. Rather endlessly. It was rather a cute occurrence really. I guess you just had to be there. 😀