Maybe he is nervous?
cactus
A community for the cultivation, photography, and general information about cacti. Growing advice, photos of cactus in cultivation or in the wild, or other cactus-related content is all welcome.
You think we would be past the point in which we judge each other's cactus. Big cactus, small cactus, pointy or flacid. They all need love. Let's just share the love.
Teddy Bear cactus! And I concur that it needs significantly more light. Presuming you live in the northern hemisphere, get it into a south-facing window for optimal sunlight, but if that isn't possible a west-facing window will work, too.
Looks like a Mammillaria matudae!
https://commons.wikimedia.org/w/index.php?curid=69008440
The flopping be what they do. They have what's called a prostrate growth habit!