Dickheadity 

Activity or activities that highlight a person as an utter dickhead.

She was a moron, frequently engaging in dickheadity.

Dickheadity by Grandpa G July 12, 2011

dickheadery

word used to describe the behaviour of a dickhead...

(in the same way a "stupidity" is used to describe the behaviour of a stupid person).

"Why did he do that?! Why does he need to indugle in this dickheadery?"

dickheadery by StompKat September 12, 2009

Dickheadtator

Dickheadtator
/ˈdɪkhɛdˈteɪtə/

noun
VULGAR SLANG
a stupid, irritating, or ridiculous man, with visions of grandeur such that he thinks he is a ruler with total power over a country, occasionally one who has obtained control by force, but more often just through smoke, mirrors and utter bullshit.

"When somebody is president of the United States, your authority is total," - Donald J. Trump, April 13th, 2020.
"You're a fucking dickheadtator, buddy!" - Rest of the human species, soon thereafter.

Dickheadtator by Ms. Unformation April 13, 2020

dickheadism 

the method or art of being a dickhead

why would you perform an act of such great dickheadism?

dickheadism by Jesswa October 9, 2006

dickheadry 

Acts of a dickhead.

Dickheadry describes the, wilful or otherwise, acts of stupidity or negligence that can be traced back to a dickhead.

Joe's lack of care factor in processing this data can only be described as an act of dickheadry.

dickheadry by Professor Bunyip January 8, 2016

dickheading around 

(Australian Slang) The act of being a dickhead, usually causing inconvenience to others.

Stop dickheading around, we don't have time.

dickheading around by Blue Socked Llama August 22, 2007

dickheadidishness 

Generally being a dick head.

Your dickheadidishness is disrupting the entire class.

dickheadidishness by Mr. D and his 6th period class August 19, 2021