Payday 2 Has Goat Simulator DLC and I'm so Confused

For $6.99 you can subject yourself to complete chaos in Payday 2:

WHEN THE PAYDAY GANG WERE ORDERED BY VLAD TO INTERCEPT A TRUCK CARRYING COCAINE, THEY EXPECTED TO ACT AS CLEAN-UP AND COLLECT THE GOODS. EASY PEASY. OR AT LEAST THAT'S WHAT THEY THOUGHT. BUT AS THEY ARRIVE ON THE SCENE AND SEE THE CRASHED TRUCK, THERE IS NO COCAINE PACKAGES IN SIGHT... ONLY GOATS... AND CHAOS...

This Goat Simulator DLC launches on January 14.