The BTS (Bangtan Boys) are back with "Hormone War"!

They dropped the MV, and the wait was worth it.  The song is upbeat, catchy, and laced with their strong raps and repetitive, "Hello, hello--WHAT--hello, hello," that will be hard to get out of your head.

SEE ALSO: BTS drop teaser video for new pop-up project 'MONOCHROME'

The boys likewise appear as tough and charismatic as ever, so check out the MV above!