https://www.webmd.com/a-to-z-guides/foreign-body-rectum#1
Rectal Foreign Body Overview
The rectum is that part of the bowel leading to the
anus, the opening stool passes through to move outside the body. Any object inserted or present in the rectum or anus should be removed to prevent serious complications.
Rectal Foreign Body Causes
The majority of objects found in the rectum have been introduced through the anus. But sometimes a foreign body may be swallowed, pass through the digestive tract, and eventually get stuck in the rectum.
Common examples found in the rectum include:
- Fruits and vegetables
- Bottles
- Candles
- Objects designed to be placed in the anus (such as vibrators or dildos)