1 definition by O'Reilly
A silly insult used for someone who says something stupid, a person who is really ditsy, or someone with an abnormally sized/shaped head. It's used between friends and not taken seriously.
O'Reilly thinks that Sophia, Nicole, and Felicia are whopperheads, but he still loves them.
Travis thinks that Sean has a whopperhead, because it's big and square.
Travis thinks that Sean has a whopperhead, because it's big and square.
by O'Reilly July 12, 2006