[ Lambert gives him a companionable squeeze with his tail. He isn't being shoved off and disappeared on, yet, so he'll count it as a win. ]

The rest of the details are a little fuzzy, but it's open to interpretation. [ He shifts his position so that instead of leaning on the desk beside Childermass, he's face to face with the magician, his tail long enough to stay coiled around him through the movement, though by necessity it slides around a bit. His hands come to rest on the edge of the desk on either side of Childermass, though he doesn't crowd him in too much, just grinning in the face of his deadpan look. ]

Ending the world's a bit dramatic though, don't you think?