Students were terrified Wednesday when an intruder came into a law school class at Seattle University and engaged in bizarre behavior, The Seattle Times reported. A man in a trench coat, eating ice cream, entered the classroom, sat down at a table at the front of the classroom and refused the professor's request that he leave. Authorities said he turned over tables and other classroom furniture and that some students thought he might pull a gun (he didn't). The man was arrested on trespassing charges.