This is by far one of the weirdest foreign body I've seen in a while - a mag light! In medical terms, a foreign body or object is something that is in the body but does not belong there. Small foreign bodies are pretty common, found in the ears, nose, airways, and stomach. They can irritate, eventually causing inflammation and scarring of the tissue, not to speak about the infections they might bring. The main symptoms experienced, depending on the location of the foreign body are pain, choking, breathing problems, and nasal discharge.
Ive seen an isis warrior stick a grenade up his anus, thinking he could pull the pin at will.