Francis shook her head. "I think.. that we can use the polyjuice potion to turn into Professor Airlia and Melita.. While Melita goes in and offers the cookies, Airlia will wait outside.. After Melita leaves, Airlia will go in. Since Hubert loves Airlia, he will say nothing and do as he is told. Airlia will tell him to try to catch the socks, which Hubert will do. Then Airlia will spread socks everywhere.. including in Borr's face.. And as soon as Borr stirs, Hubert will catch the sock and be free!", she said excitedly.