The way I did it back when I didn't care about dying a slow, painful death due to cancer was to suck the smoke into my mouth, then inhale, then exhale the lot. Or you could just suck it into your mouth and skip the inhale, just puff away.
A word of warning, though: a lot of companies are starting to screen for nicotine. If you have any desire to work in healthcare especially, I'd recommend stopping now.