Our night guy Mateo has been playing it non-stop, and it's a staple in the 1035 KISS FM hallways.

So what the hell is this Pineapple Pen song?

Some people are calling it the next "Gangnam Style," by South Korean superstar Psy. Only this song is even more silly, and it's by Japanese comedian Kosaka Daimou.

What is a Pineapple Pen? What does it mean? Apparently nobody knows. But this is the hottest viral song since "What Does The Fox Say" by Ylvis.

You can hardly go anywhere in the Treasure Valley without hearing some kid singing about how he or she has an apple, a pen, and a pineapple pen.

Don't try to understand it. Just understand that it'll be the hottest thing for the next week and a half.