Does it mean anything when you continue to keep biting your tongue is that a sign of a stroke.

Not necessarily: More info is needed as well as an exam. Please see your family physician. Could be anything from a habit to a malocclusion.

Probably not: Probably due to habit, malocclusion, recent change in your dentition (such as having a tooth removed without replacement), etc. Please see your Dentist to evaluate your occlusion and to evaluate all off the soft tissues in your mouth, in particular your tongue. If no dental reason, your Dentist will then refer you on to your Physician for continuation of the diagnostic process.