Harry had to disguise his bark of laughter with a coughing fit when Umbridge finally appeared at the classroom door, carefully nudging the chair out of the way with her foot to allow the door to swing shut. Her hair looked as if she’d spent the night holding onto a tesla coil, with some strands being practically vertical. The look she shot him was particularly nasty, and Ron began sympathetically slapping him on the back to really sell the act.