Well this is interesting. I went looking for the source of the "Ruby" video and found this:
This person posted in the comments:
And yes, she does appear to be the mother of the original Ruby. If you Google for "hamburger, french fries, fart" multiple other videos pop up of people pretending to do this - with the same audio. A lot of them on TikTok, as the original mom says.
WTF? Are people this attention-starved that they've moved beyond reposting someone else's content and started re-enacting it without even bothering to redub the audio?