Historical Examples. 1  What between the blow of the cougar and the force of the fall, the big-horn was dead. 2  Two Arrows wiped the blood of the cougar from the blade of his lance. 3  But now the hounds were too quick, and in a trice they had the cougar surrounded. 4  No cougar stalking its prey could have been more lithely wary.
SeveralPossibilities: Most cases of a twitching lip may be due to stress, fatigue, emotion, excessive caffeine intake or some deficiency in the diet such as potassium. Lip twitching in most cases is self-limiting, disappearing in minutes or maybe in a few days without any residual problems.
When a person experiences lip twitching it can make your lip feel like it is quivering. There are many different reasons why a person might have lip twitching that can include: 1  Irritation of the facial nerve due to trauma or injury.  Stimulation of the nerve endings that is present in the muscles of your lips.