Wikipedia
Tellum
The tellum or reverse mullet (also referred to as a frullet) is a hairstyle similar to the mullet. "Tellum" is "mullet" spelled backwards. While a mullet is short in the front and long in the back, the opposite is true for a tellum. The hair is longer in the front (usually straight cheek-chin length hair), and is short/buzzed in the back. The back is often spiky as well. It’s not uncommon that the back layers of hair are dyed a different color than the front, or that there are drastically different colored streaks (highlights/lowlights) running through the front of the hair.