WATCH: Shaq flirts with Flat Earth theory after flight to Australia

O'Neal, who's also known for his controversial opinions, made the comments during an appearance on the radio show Kyle and Jackie O, where he said that he had taken a 20-hour flight that didn't go over any edges or tip over once. Shaq did not flat-out endorse the theory, but instead said that it was something to consider.

"I did hear a podcast once where you were fighting with someone claiming that you thought the world was flat and that there was no way it was round. Was that a joke?" asked host Kyle Sandilands.

"It was a theory," O'Neal responded.

"It's just a theory. They teach us a lot of things. It's just a theory. For example, I flew 20 hours today. Not once did I go this way," said O'Neal while making a tipping gesture with his hand. "I didn't tip over or go upside down. It's a conspiracy theory," he said.

Sandilands rebutted, "If you left New York you can fly that way to Australia, and if you left Los Angeles you can fly that way. So how's that work?"

"It's still a straight line, you don't go under. It's just a theory. Another theory, they say the world is spinning, I've been in a house on the lake for 30 years, not once did the lake rotate to the left or rotate to the right."

"You know what, I've thought of that too. If we're spinning so fast, why aren't we dizzy?" joked the host.

O'Neal has been open about his interest in the theory, saying in 2016 that "the Earth is flat."

"Listen, there are three ways to manipulate the mind: what you read, what you see and what you hear," said

"In school, first thing they teach us is, 'Oh, Columbus discovered America'... Columbus didn't discover America. So, listen, I drive from coast to coast, and this sh*t is flat to me. Satellite imagery could be drawn and made up," he said during an episode of the Big Podcast with O'Neal. "I'm just saying, when I drive from Florida to New York: flat. New York to Seattle: flat. Seattle down to LA: flat. LA back to Florida: flat."