The French Inhale (also referred to as the Irish Waterfall) is the one you always see in the movies: you exhale smoke through the mouth and then inhale through your nose. This is one of the easiest hookah pen tricks to pick up on and, given a few minutes of practice, you should be on your way to mastery!
Step 1: Take a moderate-sized drag. As with smoke rings, make sure that you don’t inhale the hookah pen smoke into your lungs.
Step 2: Curl your bottom and top lips outwards, your bottom lip slightly more so. This is an important part of this smoke trick. If you are having trouble with this step, it may be best to practice simply curling your lips (please do it alone to avoid embarrassment).
Step 3: Lightly exhale the smoke. Pushing the smoke out of your mouth with your tongue may be a useful technique.
Step 4: Inhale the smoke through your nose as you exhale through your mouth. This can take some time to get down perfect, but you will be well on your way given a couple of shots.