Original: The word frenulum on its own is often used for the frenulum of prepuce of penis , which is an elastic band of tissue under the glans penis that connects to the prepuce , or foreskin to the vernal mucosa , and helps contract the prepuce over the glans .
Simplified: This is an elastic band of tissue under the glans penis that connects to the prepuce , or foreskin to the vernal mucosa .