... Fellow student Julie Poole said that on the first day of a literature class last year the students introduced themselves one by one, but when it was Cho's turn, he did not speak. The professor, she said, looked at the sign-in sheet and where everyone else had written their names, Cho had written a question mark. "We just really knew him as the question mark kid," Poole added. ...
http://en.wikipedia.org/wiki/Cho_Seung-hui
