Based on common search patterns and Kannada internet slang/culture, I will break down what you likely mean, then provide a long-form, informative article around the : humorous/educational Kannada jokes ( Kategalu ) involving a teacher, a mischievous student, and wordplay.
The phrase "Teacher Tullu Student Tunne Kama Kannada Kategalu Rar" seems to be a joke or a play on words in Kannada. "Kategalu" means "jokes" or "riddles," and "Rar" could be an expression or an interjection. Teacher Tullu Student Tunne Kama Kannada Kategalu Rar