I don't know i'm Thuli
You scream this when you're clueless and you want to make a scene. It's like a kid who won't stop crying in the middle of a movie.
"I don't know I'm Thuli!" he yelled when he didn't know the answer to the question.
"I don't know I'm Thuli!" she said when she didn't know the steps to the dance.
"I don't know I'm Thuli!" he screamed when he failed the test.