Students arriving for class this afternoon at the John Jay College of Criminal Justice building at 445 West 59th Street were greeted by a worker using a bullhorn to warn them: Stay away! Bed bugs! Classes canceled! Basically, the school's gripped with panic and they're one step away from painting a giant red "B" on the front door. After employees complained of itchy rashes this week, the administrators called in one of those trained dogs, who turned up the pests on the first three floors.

The building will be closed until at least Tuesday for extermination. Good luck with that! But John Jay spokesman Jim Grossman tells City Room the building isn't infested, it just has a "condition." See, "Infestation is when you can see them swarming." Which must make John Jay students feel very secure and warm inside. On the other hand, "No test today!"