noun Slang: Vulgar.
an extremely stupid or inept person.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for butthead
Contemporary Examples of butthead
Beavis and Butthead is a cartoon parody and thus is fairly straightforward (but nonetheless brilliant).MTV’s ‘Girl Code’ Is a Wildly Popular Show With Nothing to Say
July 14, 2013
Online Etymology Dictionary, © 2010 Douglas Harper