Parafunctional activity Parafunctional activity A para-functional habit or parafunctional habit is the habitual exercise of a body part in a way that is other than the most common use of that body part. The term is most commonly used by dentists, orthodontists, or maxillofacial specialists to refer to para-functional uses of the mouth, tongue and jaw. Oral para-functional habits may include bruxism (tooth-clenching and/or grinding), tongue tension ("tongue thrusting"), fingernail biting, pencil or pen chewing, mouth breathing, and any other habitual use of the mouth unrelated to eating, drinking, or speaking. Crenated tongue is a descriptive term for when scalloping develops on
Habitual be possible origin of habitual "be". Habitual be Habitual "be" is the use of an uninflected "be" in African American Vernacular English (AAVE) and Caribbean English to mark habitual or extended actions, in place of the Standard English inflected forms of "be", such as "is" and "are". In AAVE, use of "be" indicates that a subject repeatedly does an action or embodies a trait. In Standard English, the use of (an inflection of) "be" merely conveys that an individual has done an action in a particular tense, such as in the statement "She was singing" (the habitual being "she sings"). It