You're supposed to combine ice cubes and water in a bucket -- but that's not quite what Rob did.
In this video uploaded by Zac Efron because Robert is not on any social media, the Twilight star says he "couldn't find a bucket at such notice and had to improvise."
Someone then pours a pot of ice, and another sprays him with a hose. Many netizens echo the same sentiment:
"Er Rob, you're supposed to combine them?"
However, the endless streams of water and repeated cup throwing did make a good laugh for the Internet.