The freakish request follows the White House doctor Ronny Jackson claiming that Trump is 6'3 and weighs 239 pounds - which is one pound less than a weight that would be classed as obese.
The filmmaker and other Trump critics didn't buy it. It was part of the new "Girther" movement on social media, a title that mocks the "Birther" movement that Trump was a part of when President Obama was in office.
"I will give $100 thousand dollars to Trump's favourite charity if he will step on an accurate scale with an impartial medical professional, okayed by both of us".
Gunn added, "Let's be clear that he's an Obama-appointed doctor who released a statement through the White House yesterday about Trump's wonderful health where "he" SPELLED HIS OWN NAME WRONG".
Lest we think his questions pertain only to the president's weight, Gunn also posted a photo of the purportedly 6-foot-3 Trump alongside the 6-foot-1 Barack Obama. "At 6'3" (another questioned stat, but let's go with it for the sake of our discussion) and 239 pounds, Trump's sheer size made the numbers seem, well, implausible. "Albert Pujols is 6'3" and 240 pounds.
President Trump was given a clean bill of health, but conspiracy theories about his condition have gone viral - with amateur doctors across the internet insisting that the White House physician must be suppressing the cheeseburger-loving commander-in-chief's true weight, blood pressure and even height.