French inhale

The French inhale is a trick one can perform while smoking. One takes a deep drag, then while the mouth is open and smoke is wafting out, one inhales through the nose, thus inhaling the smoking drifting from the mouth. Some people refer to this trick as an Irish Waterfall because the smoke appears to be flowing uphill (a reference to the old jokes that anything Irish is backwards).

This trick is often performed in conjunction with the smoke ring.