Alex Stone said he and his classmates were told in class to write a few sentences about themselves, and a "status" as if it was a Facebook page.
Stone said in his "status" he wrote a fictional story that involved the words "gun" and "take care of business."
"I killed my neighbor's pet dinosaur, and, then, in the next status I said I bought the gun to take care of the business," Stone said.
Stone says his statements were taken completely out of context.
"I could understand if they made him re-write it because he did have "gun" in it. But a pet dinosaur?" said Alex's mother Karen Gray."I mean first of all, we don't have dinosaurs anymore. Second of all, he's not even old enough to buy a gun."
Investigators say the teacher contacted school officials after seeing the message containing the words "gun" and "take care of business," and police were then notified on Tuesday.