The punching telescope is a trick telescope that when squeezed emits a cloud of black smoke, a bang, and a tiny fist springs out to give the user a black eye.
When Harry told Ron & Hermione about the prophecy, Hermione squeezed the telescope from worry and surprise and it punched her (HBP5).
Commentary
Notes
Hermione jinxing Marietta's face is a highly controversial move of the character's. Interestingly, Hermione worries if the punching telescope's injury will ever come off, reminiscent of Marietta not losing the spots on her face.
Pensieve (Comments)
View 0 thoughts swirling around the pensieve. Add your own.