I don't know i'm Thuli
You say this when you're clueless and you want everyone to know it. It's like throwing a fit in the middle of the cafeteria.
"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 what the word meant.
"I don't know I'm Thuli!" he screamed when he didn't know the difference between a noun and a verb.