Green Day front man Billie Joe Armstrong expressed his distaste for "Gangnam Style" rapper Psy on his Instagram account, saying, "This dude is the herpes of music. Once you think it's gone, it comes back. #herpes #flareup #pleasegoaway."
While Psy might not have have understood what Armstrong's comment meant, he appeared to shrug the insult off. During an interview with Fuse, he asked the host what exactly herpes meant, reflected for a moment, and then offered his response.