Duterte sparked a storm on the eve of an Asian summit this week by labelling Obama a "son of a whore", prompting the US president to cancel a planned meeting. The pair met briefly later at the gathering in Laos after Duterte expressed regret.
But acid-tongued Duterte on Friday said the Philippine expression "putangina" should not be taken at face value, and it was "an ordinary expression (used) by everyone".
He insisted his remarks were not directed at Obama but at the US State Department, which has raised concerns over potential human rights violations in Duterte's anti-crime campaign which has left almost 3,000 dead in just over two months.
"I got really angry about these threats over this human rights issue. This is the fault of the crazy people in the State Department," he said.
Also Read
Duterte said he had clarified his comments to Obama when they met.
The United Nations has also spoken out against his crime crackdown and today Duterte added UN chief Ban, who spoke at the Asian summit, to the list of those he has insulted.
"I told myself, you're just one more fool," Duterte said of Ban.
"I will continue the campaign against the criminals. I do not have any pity for them," he added.
"I don't give a shit. I am the president of the Philippines, not the republic of the international community."
Disclaimer: No Business Standard Journalist was involved in creation of this content