“Spike!” Angel snarled.  “You did that on purpose!”

“What?” Spike asked innocently.  “You’re the one falling all over the place.”

“I did not fall,” Angel ground out, getting to his feet.  “You tripped me.”

“Ghost here, remember?  I’m all go-through-able!”  Spike stood in the middle of Angel’s desk for emphasis.

“I don’t know how, but you did it.”

Oh, he was getting close now.  If he had enough solidity to trip up Mr. Broody Pants, it was just a matter of time before he was fully corporeal.  And at least he had something to pass the hours while he waited.