"To invite you to a party, of course," Blaise said.  He looked at the obvious bafflement on Hermione’s face and laughed. "Even you, Granger, though I doubt you’ll have a good time.  Goyle is having one of his things, and if you don’t show, Malfoy, you’ll end up with Pansy filing a statement of concern at the Ministry that you’re the victim of foul play at your little pet’s hands."