Stephen Colbert has fueled speculation about Donald Trump 's health following an unusual trip to Walter Reed Medical Center, RadarOnline.com can reveal.

After the president, 79, confused a "very hard" cognitive exam for an IQ test while bragging about his results to reporters, the late night host insisted "something's wrong" with the 79-year-old. Article continues below advertisement

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Colbert questioned Trump's October 10 visit to Walter Reed during his opening monologue.

While speaking to reporters on Air Force One amid his Asia trip, Trump said: "I got an MRI. It was perfect.

"I gave you the full results. We had an MRI, and the

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