Johnny pulls back, almost affronted that Topher isn't perturbed by his little show. This only convinces more than Topher's a product of his self-sabotaging subconscious. The complete lack of surprise. The lack of caution. Johnny can't surprise a reflection of himelf.

Johnny grits his teeth and ups the ante, rendng the floor further apart, such that Topher will either have to step back or fall into the crevice. The glass walls crack threateningly. Johnny doesn't bother answering the question.