Kiri raised her hand. "Erm, I would, Professor," she said. According to the Care of Magical Creatures textbook, these Billywigs were supposed to cause "giddiness and levitation", and while Kiri didn't particularly want to let herself be stung on purpose (the Billywig she'd cast the Freezing Charm on was probably out for revenge), she thought she was due some giddiness. Her head felt heavy enough to warrant a bit of levitation too.

She stepped up and joined the circle of volunteers clustered around the professor.