Numhead 

It means they have no sense and are thick.

You are a numhead

Numhead by Numhead July 20, 2018

Nuthead 

A really stupid person

Why you talkin you nuthead.

Nuthead by Tezzy May 14, 2021

Nuthead 

(1) A person with the brainpower of a walnut, or any nut.
(2) Someone so stupid, that a nut has a higher brain cell count then them.

I'm never inviting Petter to my birthday party again. He acts like such a Nuthead

Nuthead by Kofi Gaisie November 26, 2019

Nuthead 

Someone with a nut shaped head

Eelko has a huge nuthead

Nuthead by DryApplePie April 13, 2011

Nubhead 

1. Someone who is nub in the head. Somewhat like n00b, but taken a step farther. A nubhead is a permanent n00b who cannot rid themselves of thier nubheaded n00bness.

2. Someone who has a nub, or a stubby penis, for a head.

Dude, you're a fucking nubhead. You don't pork fat chicks. Ever.

Nubhead by O'Conner September 12, 2005

nuthead 

Someone who thinks only thoughts that include sex, having sex, or something to do with sex. Basically someone who thinks with their balls.

Damn, he never shuts up about pornstars; he's such a fucking nuthead.

nuthead by Robby C. May 24, 2006