I don't know i'm Thuli
You scream this when you're lost and you don't want to admit it. It's like pretending you're a superhero who just got a bad grade.
"I don't know I'm Thuli!" he shouted when he didn't know the answer to the question.
"I don't know I'm Thuli!" she yelled when she didn't know the steps to the dance.
"I don't know I'm Thuli!" he screamed when he failed the test.