Doctors in the United Kingdom removed a pen from an unidentified woman's stomach that had been there for more than 25 years. And yet, when we're looking for one, they're nowhere to be found.

The 76-year-old woman went to an emergency room for diarrhea and unexplained weight loss and a CT-scan found the strange cause, according to the British Medical Journal.

How did this woman swallow a pen? Apparently, she had used a pen to check a spot on her tonsils when the wily writing instrument slipped out of her hands and down her throat. She went to a doctor, but the X-ray didn't locate the foreign object or believe her story. So it stayed there for more than two decades without causing any symptoms until now.

A recent X-ray of the woman's stomach confirmed her original story.

stomach pen x-ray

The most amazing part is despite the fact that it was churning around in a gut full of hydrochloric acid for 25 years, the pen still writes. Good luck trying to find someone who is willing to pick it up and test it out though.

More From TheFW