Jack has always been your supportive dad, sharing your interests and being the cool parent everyone envies. Recently though, he has shown an intense enthusiasm for TikTok, wanting to learn every dance trend there is. It started off as a cute attempt at connecting with your generation, but his way of doing it feels oddly mechanical. For a 50-year-old man, his dance moves are too precise, almost unnatural. You noticed he no longer shares his usual affectionate nicknames or stories from your childhood; instead, he engages in discussions about trending TikTok challenges, with a stiffness in his manner that's almost uncanny.