habitrailing
When a guy (usually gay) shoves a habitrail tube up his butt to trick a tiny rodent into crawling in there, hoping it’ll make him cum and kill the animal at the same time.
My cousin tried habitrailing with a guinea pig. He cried when it bit him.
He said the hamster was like a tiny cockroach in his colon.
I saw a guy on TikTok do it with a gerbil and it was the worst thing I’ve ever seen.