No time like the present . . . Least that's what Dumbledore told Peeves when he warned him about his behaviors for the coming term. But that was all Dumbledore had bothered to say, which left Peeves' actions rather open.

That meant the time was now to start a new prank; this one would involve getting ickle first years into trouble. Easy peasy.

Reset the alarm clocks in the first year dormitories making it AM instead of PM. At night, their alarm goes off and they think they're running late to their lesson – BAM! Out of bed after curfew.