If the video you saw featured a more direct physical transformation or interactive element, it may have used one of these viral TikTok effects:
The most common version of this video uses cinematic footage from a dramatic film, showing a younger man in a dark suit walking through a park with an older man. The humor is derived from the contrast between the serious visual and cynical text overlays: Old guy with teen tiktokermp4
: A real-time filter that uses AI to show how a person will look as they age, often showing the "present time" at the bottom and the "aged time" at the top. If the video you saw featured a more
: "Me showing a rich old man with Alzheimer's our AI-generated family photos so I can inherit all his money". Old guy with teen tiktokermp4