No ., it is not ok ... Nor is it "funny" . Sound more like a desperate attempt for attention .. Even if it's negative attention.
Is it okay to bring a lighter in school to smoke a fake ciggarrete. As a joke?
Absolutely Positively NO. NEVER.
I doubt it. And judging by your spelling you need to pay more attention in class and worry less about the jokes.
Really? Check your school's handbook ahead of time to see what your punishment will be.
I think this is a question for the School Governing Board, find out when they next meet.