"Physical contact intensifies the effect," Hermione said.  "It's euphoric and mindless and... but that's as good a description as any."  She glanced over at Malfoy and his face quickly shuttered, but not before she saw something dark in his eyes.   Pity, maybe, or pleasure.  Either way, it left her feeling far too vulnerable.   She folded her feet under her more tightly as if that could protect her from Zabini's too knowing, too amused eyes.