South Korean pop sensation Psy poked fun at his own poor academic record when he addressed students at Harvard University on Thursday night.
The flamboyant artist behind the global hit 'Gangnam Style' studied in Boston for four years and revealed that his student nickname had been 'WWF' - standing for 'Withdraw Withdraw Fail'.
Dressed in a formal black suit with bright pink cuffs, he drew laughter when he joked that he was the first person ever to give a speech at the prestigious university without a script.
It is not the first time he has swapped his signature tailored suit and bow tie for robes, having spoken at the Oxford Union last November.
After receiving a standing ovation from students, Psy spoke for over an hour punctuated by occasional dance moves.
His subject rambled from his own waistline to his experience of collaborating on a song with Madonna.
Harvard professor Alexander Zahlten introduced Psy, whose real name is Park Jae-sang, as a global figure who has shown the ability of Korean pop stars and video-game programmers to find overseas popularity through the Internet.
"He's a global citizen, and in turn influences people all over the world," Zahlten said. "He's deeply connected to digital culture."
Psy became a household name around the world after the video to 'Gangnam Style' attracted a record number of views on YouTube.
He told his audience at Harvard that he had "partied hard" when his video reached its first 10 million hits, unaware that it would go on to be viewed more than 1.5 billion times.
His follow-up song 'Gentleman' received more than 20 million hits in the first 24 hours after its release last month.