Ofcom hates SpongeBob GIFs & videos:

It even includes “[c]ontent which realistically depicts serious violence against a fictional creature.” Such a definition would not only prohibit minors from accessing historical and newsworthy content about wars—but many episodes of SpongeBob (if posted to social media), including but not limited to “No Weenies Allowed.” This is not an exhaustive list of prohibited content, either.

https://www.rstreet.org/commentary/u-k-s-online-safety-act-censors-the-internet-a-preview-of-u-s-proposals/