I can tell you for a fact if you're saying your boyfriends dick went all the way in either hes built like a pencil or you're built like the M4. It would never happen, or you'd be in excruciating pain and probably bleeding from the experience. Literally anyone who has even attempted anal will tell you it is not something you can just do on a whim, it takes preparation and time

Go outside for a bit kid

Whoever wrote this has never tried anal in their entire life.

That makes sense, I always thought a robot could be far more precise than a human but I think obviously things are more complicated than that.