The style of the clamp is to hold the cigarette by clamping it between the index finger and middle finger. However, there is also a middle finger with a ring finger (usually used by musicians). This is a favorite style for active smokers. Those who use this style are usually smokers who have long smoked. In addition, this style looks more cool in the association.
This style is usually done between the thumb and forefinger. When smoking a cigarette, the direction of the palm is facing forward. People who are "new" smoke often wear this style. Typically, this style is used during the last puff of smoking. People who use them are usually people who are thinking or are frustrated.