Sounds like one cranky rock star woke up on the wrong side of the bed today!
Or maybe we just assume that because Billie Joe Armstrong's hair screams bed-head, LOLz!!
For reasons we cannot fathom, the Green Day punk rocker is throwing down the gauntlet and everyone's favorite international superstar — Psy!!!
On Billie's official Instagram account, the rehab veteran posted a pic of Psy's famous horsie dance with this caption:
"This dude is the herpes of music. Once you think it's gone, it comes back. #herpes #flareup"
Whoa!!! HERPES!!?! That's no bueno!!
The Gangnam Style singer, amazing samaritan that he is, shrugged the shade right the eff off!!
See his HIGHlariously understated reaction…AFTER THE JUMP!!!