At Z100's Jingle Ball earlier this week, Vulture caught up with rookie pop star Taio Cruz and asked about the particulars of his big hit, "Dynamite." Specifically: Why does Cruz throw his hands up in the air only sometimes? "Because if I didn’t throw my hands up in the air ‘sometimes,’" Cruz explained, "I would literally walk around with my hands up in the air all the time, and that would be weird." So when do you not throw your hands up in the air? "Regular circumstances, like walking down the street." And when would you definitely be throwing your hands up in the air? "Well, number one, if a teacher asks you a question and you want to answer it, you can throw your hands up in the air." Both of them? "Yes. If you’re on a roller coaster and it’s going really fast, you can throw your hands up in the air. Second most importantly, doing a Mexican wave. And mostly importantly, when 'Dynamite' comes on." Thanks, surprisingly funny Taio Cruz! For more celebrity quotes, click through our Party Lines slideshow.