Smoke ring

[1] A smoker may produce rings by taking smoke into their mouth and expelling it with a tongue flick, by closing the jaw, tapping the cheek, or producing a sudden burst of air with the lungs and throat.

A trick often performed in conjunction with mouth-blown smoke rings is the French inhale.

[citation needed] The most famous such steam rings were those produced during the mid-20th century by Douglas Leigh's billboard on the Hotel Claridge in New York City's Times Square, advertising Camel cigarettes.

Inspired by a World War II-era prohibition on lighted advertising, the Camel smoker remained a Times Square landmark long afterwards.

[2] Some users of electronic cigarettes modify their devices to inhale large amounts of vapour at once, to exhale "clouds" in patterns like smoke rings.