Following the news, Brexit Secretary David Davis said the country was now on the "threshold of the most importation negotiation" for a generation.
Duterte's remarks were a departure from his openness to same sex-marriage during the presidential campaign period in 2016.
Several ministers attended the meetings between President Htin Kyaw, State Counsellor Aung San Suu Kyi and Philippine President Duterte at the presidential palace.
He recalled that during last year's presidential election campaign, Duterte said he was open to the idea of same-sex marriage, boosting his popularity in the lesbian, gay, bisexual, and transgender (LGBT) community and gave credibility to his image as a politician respectful of LGBT rights.
President Duterte then thanked the Myanmar leader for the warm welcome he and his delegation received in his first official visit to the country. Duterte has especially appeared reticent to cooperate with the United States in curbing China's expansionist moves in the South China Sea where Beijing claims territory belonging to the Philippines in the Spratly Islands and Scarborough Shoal.
"I'm just interested going after the drug guys".
'Why are you trying to impose on us?
As reported by The Guardian, which has the official rights to the video and uploaded it immediately after the fact, Rodrigo Duterte informed the European Parliament that it would be in their best interest to not "f**k with [his government]" and that they should mind their own business.
"ANCRodrigo Duterte launched into a extraordinary rant directed at the European ParliamentRelated articles
Why do you have to f*** with us, goddamn it?"
However, Human Rights Watch and Amnesty International say police are carrying out extrajudicial killings and have warned that Mr Duterte may be overseeing crimes against humanity.
Since taking office a year ago, Mr Duterte has led a campaign to eradicate illegal drugs in the Philippines, which has left more than 7,000 people dead. "More people will die". "I will continue until the last drug lord in the Philippines is killed and the pushers out of the streets".
Duterte has been an LGBTI supporter for years, voicing his approval of marriage equality during his term as Vice-Mayor of Davao City.