PSY Responds to Being Called "Herpes of Music" by Green Day's Billie Joe Armstrong

"#pleasegoaway," opined the Green Day singer—but the South Korean rapper took it in stride

Billie Joe Armstrong's opinion of PSY gives new meaning to the term "viral video."

"This dude is the herpes of music. Once you think it's gone, it comes back.#herpes #flareup #pleasegoaway," the Green Day singer wrote on Instagram Tuesday alongside a photo he posted of the South Korean rap superstar, who burst upon the U.S. scene last year with "Gangnam Style" and shows no signs of letting up.

But even though that wasn't a very "Gentleman"-ly thing of Armstrong to say, PSY took it in horsey-dance stride. He is the one smashing YouTube records, after all.

First off, when asked by Fuse News about Armstrong's crack, PSY asked, "Herpes? What is herpes?" (For the record, he also needed a reminder on who Armstrong was.)

And even after being informed that it was a "sexually transmitted infection," he thought about it for a second and then smiled.

"Oh...hmm...I kinda like it, it's cool," PSY concluded. "So he is saying, I'm like the herpes...I should say something to him. He says I'm like herpes, keeps coming back.

"I think it's really cool and I appreciate that," he said, turning to the camera. "Thank you."