Abstract: A chewable writing instrument. A chewable sheath attachable to a writing instrument. A chewable sheath containing writing means having a writing end and a non-writing, chewable end. The chewable sheath or combination is suitable for placement into the human oral cavity and adapted for the chewing action of the teeth, lips, gum, and tongue. A chewable sheath protects the mouth, teach, tongue, and tissue of the chewer. A chewable sheath protects the chewer. A chewable sheath protects the chewer's clothing. A chewable sheath or combination with dental hygiene conformations provides a supplement to daily dental hygiene care. A chewable sheath or combination flavored with flavoring aromatic and tasteful to the chewer enhances chewing pleasure. A chewable sheath or combination flavored with flavoring bitter and unattractively flavored to the chewer aids in breaking bad chewing habits.