mullethead
Proposed by a contributor, not yet supported by evidence.
Meaning · English
fool, idiot
Register: slang
Where it’s used:
Used
American English
Examples
I bought a very nice Saab because some mullethead used half a tube or more of blue silicone seal to glue on a transmission cover.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “mullethead” mean?
fool, idiot
Is “mullethead” formal or informal?
mullethead is generally slang.