Responses
You can 100% use vibrator lá in the anus, the thing is, the one he used wasn’t safe, because it was a small one and not easily held, that’s why, people who use the egg shaped one always buy the version with the little cord on it, so you can push it out, and other bigger vibrator you can hold easily, and it’s not that much of a problem of your ass has been yk, opened lmao. Honestly, most of the times is safe, it just depends on the size and if you know how to hold it(with your hands, not ass), even better if you have someone else to do it for you though.

Just one thing about chapter 4
Never use any vibrator in the anus !! The rectum is directly connected to the intestine that is meters long, so don't stick anything bc the risk of going deep is huge and you will need SURGERY to remove the object !! (believe me, it happens a lot in straight men who don't research the subject and literally fuck themselves)
If you want to test, great. There are specific anal plugs for this .. do things safely
ヾ(❀╹◡╹)ノ~