Very slowly, the young lady on the platform raised her hands to her face. I saw her gloved fingers unhooking something behind her ears, and then…then she caught hold of her cheeks and lifted her face clean away! The whole of the pretty face came away in her hands!
It was a mask! (7.4-5)
"You may rrree-moof your gloves!" […]
"You may rrree-moof your shoes!" […]
"You may rrree-moof your vigs!" (7.12, 14, 16)
"Do you not know," she shouted at them, "that vee vitches are vurrrking only vith magic?" (8.38)