Please choose the correct ending to complete the given sentence: Health: [header] How to french inhale (irish waterfall ) [title] Take a large puff of smoke and hold it in your mouth. [step] Don't inhale the smoke into your lungs. Bring your tongue to the back of your mouth and use it to trap the smoke.

Ending1: Stay in this state as you inhale and exhale. When you exhale the smoke, your mouth will start to open and the air will go from your mouth into your lungs, making a " ch-ch " noise. Ending2: Inhale for 3-5 seconds and release slowly. [substeps] If you don't exhale quickly, the smoke will build up on your throat, cause a cough. Ending3: Let the smoke sit in your mouth for a moment before moving on to the next part of the trick. [title] Slowly open your mouth to release the smoke. Ending4: Draw water in slowly, inhaling it from both sides of your face. Once you are sure that the water is under your upper nostrils you should be able to open your mouth fully.

Answer format: ending1/ending2/ending3/ending4