fathead

noun5

1. •
   (disapproving) An idiot; a fool.

   • You fathead! You forgot to put the milk in the fridge and now it's spoiled!
2. •
   A cyprinid fish of the Mississippi valley, Pimephales promelas, the black-headed minnow.
3. •
   A blobfish, Psychrolutes microporos
4. •
   A labroid food fish of California; the California sheephead. Semicossyphus pulcher.
5. •
   Any of several species of fish of the genus Cubiceps