Might as well add my thoughts from this (I read the whole thing lol)-
I really think you guys are missing a lot of Movie's points, and when you don't have a reaction to what he's saying, you attack HIM. That is VERY bad in a logical debate such as this ~_o
To the people who said "Try thinking of God while you masturbate. It's not glorifying him, so it's a sin." At first glance, this seems like it would end all discussion. However, think about all of the OTHER "private" things that people often do. Do you glorify God when you take a crap? What about when you're swick and blowing chunks all over the place? When you're having sex with a spouse, is God the first thing that comes to your mind? I think a lot of things would be considered "personal," that God is not against, but because it's not really exposed, it doesn't really glorify him either.
Also, when looking at definitions you have to be VERY careful with that. Example- I was reading Macbeth in English class a few days ago, and there was a little diamond symbol that directed me to the bottom of the page. There were four words that had had an original meaning when Shakespeare wrote it, but now the meanings have changed. Like "friend" meant "to be friendly." I forgot the other 3 words, but the changed in those definitions were more dramatic. Therefore, you have to look at the original Hebrew and translate that those works into a very specific English meaning to get it, since the version of the Bible that most people read today was translated a few hundred years ago.
For all we know, "lust" could've originally meant only that 3rd definition, but over time, it grew to mean any sexual desire, at all ~_o
Before reading this thread, I was up in the air on the entire topic of it, but now, seeing all the cases, I believe it is probably OK. Tbh, "feeling guilty" afterwards means very little to me, because guilt comes from EITHER your conscience OR from disobeying a "societal" boundary. If you've been raised being told it's wrong, then of course you'll feel it's wrong. Does this mean that GOD thinks it's wrong? Not necessarily ~_o