The original scene: https://www.tiktok.com/@tm.jy/video/7246655883751558426 (I could only find a TikTok link unfortunately).
For those who don’t want to click through, Tom is hit on the head by a woman (an actual racist caricature named Mammy Two Shoes) and starts to think he’s a mouse. He grows buck teeth (like a mouse or rat), starts eating cheese, and attempts to sleep on Jerry’s bed (as seen in the meme).
It’s important to recognize racist stereotypes, especially with how prevalent they were in old cartoons, but it’s also important to avoid jumping to conclusions and calling out problems that aren’t there.
YouTube link to the video: https://youtu.be/Yr8oJWS9sJo
I skimmed through it and it’s as stupid as you’d expect. The person in the video pretends to connect wires together, plugs a USB cable into a phone, then downloads an app to prove the increased internet speed. Comments are disabled and generic music plays over the video instead of any commentary.