5 Seconds of Summer recently announced their new record label, Hi or Hey Records, and the first group that they signed (the awesome California based pop-punk band Hey Violet) decided to play an epic prank on them to celebrate the release of their new video.

In the hilarious videos posted to Twitter, the band tries to get around hundreds of carefully laid out mini-cups full of water by climbing on dressers and couches. We wonder how they got that cleaned up!

In response to the hilarious prank, 5SOS decided to get back at Hey Violet with a dressing room filled with balloons and the warning "Just wait!" Uh oh, that can only mean that a prank war has begun, and since the two bands are touring together on 5SOS's Rock Out With Your Socks Out Tour that means there will be plenty of time to scheme and get back at each other!

Do you think that Hey Violet's prank was hilarious? Tell us what you think in the comments below!