I know smoking is bad for you. But is it bad to smoke and just keep the smoke in your mouth and blow out? and not inhale? My room mate does that. (He says inhaling makes you choke or whatever) So is not inhaling as bad as inhaling?

Instead of lung cancer, your room mate will get mouth cancer. Both are bad. In addition, I don't think one can become addicted to the nicotine without inhaling, so it should be no problem for your room mate to quit.

You know Bill?

You can get cancer of the mouth and gums and why bother anyway?

it's just not possible to bring smoke into your mouth yourself without inhaling some. Sure you aren't deep breathing it in there but you must draw air in through the cigarette. The only way to get smoke in and not breathe is to have someone else blow smoke through your partially closed lips and you are quick enough to trap it in there. But what good does that do? If you still feel like smoking, that means you are feeling the effects and that takes inhaling it in. Sorry, it's not possible

If you don't inhale then there is no point in smoking.

It's still bad. You only think you don't inhale the smoke, but there is smoke in your mouth and in the room, so of course it's bad. I mean, the effects of second hand smoke have been proven and those people don't even touch cigarettes!