Here is why Trump is facing speculation that he is on drugs
President of the United States Donald Trump speaking with supporters at an "An Address to Young Americans" event hosted by Students for Trump and Turning Point Action at Dream City Church in Phoenix, Arizona. Photo by Gage Skidmore.

President Donald Trump's psychology was the focus of much speculation on Twitter on Friday.

It started when Trump suggested that rival Joe Biden might be using performance-enhancing drugs during an interview with Fox News personality Jeanine Pirro.

Trump's attack on Biden was so bizarre that many people suggested Trump's comments were psychological projection, which is a defense mechanism where one projects their own failings on others. Under such a scenario, Trump's comments on Biden would be an acknowledgment that it is actually the president who is using drugs.

Here's some of what people were saying: