During the two years I worked in the ER, I only saw one “foreign object in rectum” case. He said, “I passed out at a party and woke up with a buzzing vibration sensation.”
@jlgdrd Since you titled this “uncharted territory” I’m guessing that anal stimulation might be new to you:
Explore at your own pace.
Go slowly and relax into receiving anything anally.
Use lots of lube.
DON’T PUT ANYTHING IN YOUR BUTT THAT DOESN’T HAVE A FLARED BASE! (Or have a story ready to tell the ER staff.).
The forum members here can share a lot of experience in this topic. Ask anything.