Impish Marsey

I've been a teacher for the past 10 years now, so I've seen my fair share of weird technology, however this one was a surprise. My class was going well, we were just preparing for exam week, when all of a sudden I heard a loud ringing alarm. I look around and I see a student pulling out what looked similar to a remote, and he said "my thrembometer's going off." As I was confused, I asked what thrembo was, and he said it was an imaginary integer between six and seven. I asked how this was applicable to our exam review, as this was 9th grade and currently my highest level sophomores at the most can take curriculum involving imaginary numbers, and he proceeded to say "because it just is, ok?" I called him a science-denier and he proceeded to write my sentence in green along with an arrow next to it and a bald, bearded man with glasses above it, crumpled up the paper and threw it at me. I then asked him to go to the office and he than said, in a mocking tone, "You WILL go to the principle's office because…you just WILL, ok?" In the end, the principal and his parents were called, and it was an embarrassing moment in general. How can I deal with this in the future?