Spikes "Corporeal-ness"?

[LifeIsJustThis]

Ok, So I'm not finished watching Angel yet (I'm on 5) but I have a question:

How the hell can Spike walk through elevator doors BUT sit on couches? Wouldn't he fall through the couch as well? Through the floor? I'm confused.

Also
When he refers to his mom trying to "shag him" is he referring to the events of "Lies my Parents Told Me?" Or is he referring to a un-shown event after he sired his mother?

Thanks guys!

[white avenger]

Spike can sit, or walk on the floor, without falling through for a simple reason: the plot requires it. Granted, if vertical walls can't contain him, horizontal floors shouldn't be able to, either, but there have to be some limits, otherwise Spike would have just sunk into oblivion as soon as he was released from the amulet, and if that happened, there would be no chance for the eventual Spike/Buffy reunion that we all know is inevitable.

[ILLYRIAN]

Let's see, the second question first, was there any scenes of Spike having sex with his mum? next question.
The first question, a lot of ghosts walk on the ground. I'd guess that Spike is like them just a bit cleverer than the ones that don't know how to, they just keep going to the middle of the world. I wonder how crowded it is down there?

[Blondie Bear]

Maybe it's about expectations? He expects the floor/chairs to hold him so they do? But he knows he can pass through walls so they don't stop him? It's the best I can come up with.

[angelchick182]

As for the couches/chairs thing...ya got me there. As for your question about his mum - I'm sure he was referencing the events of "Lies My Parents Told Me".

[Kana]

How can Spike sit in chairs? The same reason he can pick up cups can punch cyborgs. It's a case that some things he can't do without thinking about about it and others are so instinctual that his mind makes it real. Technically, if Spike wanted to, he could have flew to the top floor without using a lift.

[Lindsey McDonald]

How can Spike sit in chairs? The same reason he can pick up cups can punch cyborgs. It's a case that some things he can't do without thinking about about it and others are so instinctual that his mind makes it real. Technically, if Spike wanted to, he could have flew to the top floor without using a lift.

Exactly. He has to concentrate at things that he actually has to do to actually be able to do them. Things that he doesn't conciously do, like standing and sitting, his mind already realised for him. He's so used to standing on the ground that he already subconciously is concentrating on doing it, if you know what I mean.