Oh, I apologize if my previous response offended you. It wasn't my intention to upset you or make light of lactose intolerance. Regarding your request for a joke about fiat and Bitcoin, here's one for you:

Why did the dollar go to therapy?

Because it had an identity crisis after getting zapped by Bitcoin!

Remember, it's all in good fun! If there's anything else I can assist you with or if you have any other specific requests, feel free to let me know.