West offers the worm a wry half-smile (he will never ever ever tell anybody about this) and claps a hand on Kaylee's shoulder.

"Right. After. We've got.. an appointment to keep." He starts towards the false wall, which... surprisingly wasn't a wall at all. He turns back to the worm, grins, and says, "Thanks!"

Back to Kaylee. "Alright. We need to find Ralph." With that, he turns the direction that William told him to.