My mother passed away this summer, so this would have been my first Christmas with my father alone, however a few days before the date my kind cousin met with my father (his uncle) and invited him to his Christmas lunch. I am not exactly a family person (and neither is my father), and I hadn't see my cousin and his parents for 15 years, but I was very happy that my father could somehow be distracted from his loss, so I called my cousin to thank him, and he extended his invitation to me. I accepted and found myself in a party with around 8 people over 70 (most of them never before seen in my life), 4 around my age (40-50) and one single kid. I guess that accounts for the reversed pyramid of ages in the developed countries, but I digress.
My father (who is 81) knew my investment in bitcoin and had already tried to grasp the basics; turns out he spoke about that with my cousin, who in turn talked to his parents. I happened to sit between my cousin and his father (my aunt's husband who's 74) and to my surprise he didn't start the conversation with "hey, we haven't met in 15 years" but with "so, explain me exactly how bitcoin works". After a split second of incredulity, I started with the basics, and more people joined the conversation.
In the end, the Christmas lunch turned into a 3-hour conference to a mostly 70+ year old audience about bitcoin and the blockchain. Weirdest Christmas of my life, but in the end, a good one.