What can you say? It makes me chuckle. There is a certain fascination about the video which was originally an animated gif. I converted it into an MP4 video on the Internet. I suppose its fascination comes from the fact that 99.9% of domestic cats won’t allow you to clean their teeth with a toothbrush unless you have trained them to accept it from a very young age.
Of course, in truth, this is not a cat having his teeth brushed by a cat who wants a toothbrush placed into his mouth for some reason or other perhaps because it tastes nice.