U.S. - Joe Biden recently made a strange claim: that 2+2=5. He was ridiculed for his gaffe after making the statement while speaking at an elementary school. The kids all said, "Hey, dummy! The answer is 4, not 5!"

But the crack squad of fact-checkers at Snopes quickly got to work on Biden's incredulous claim. Their findings? Biden's statement was actually "mostly true."

"Sure, Biden got some key details wrong," said Bob Snopes, founder of Snopes. "But the central concept of what he was saying, that two numbers put together make another number, was completely accurate. Sometimes two and two make four. Sometimes they are five. Sometimes they are three. Sometimes they are all of them at once. It is not easy to become sane."

The website's 6,000-word defense/fact-check of Biden's claim further pointed out that 80% of the answer was correct, and it's only the one additional number that was a mixture of truth and falsehood.

As the event neared its conclusion, Biden claimed there were five spotlights lighting up the stage even though there were clearly four. One bald man in the back shouted, "There are four lights!" but was dragged from the room for reeducation.