His eyes grew a little large when the Professor leaves the ground and started climbing the walls. For all the flying acrobatics Vickers have seen of Quidditch players it was still a bit unnerving to see a living person walk on all fours vertically.

On the Professor's prompting Vickers pressed both sticky shoes against the bottom of the wall and leaned forward, slowly inching his way up with his elbows to 'standing' position before stretching his arms out as far as his 6'1 frame can reach. He could hear a soft smacking sound as the sticky gloves makes contact on the wall. Now how to start moving forward?