nithead 

A girl who knowingly has an extreme lice infestation and refuses to get rid of them

"Lydia is such a nithead
lice head lice scratch itchy eggs human fleas breeding ground infestation itchy scalp

nithead by lolkidim12 April 17, 2015

Nithead 

A person lacking in logical cognitive function.

Luke is such a nithead.

Nithead by CastiCola June 1, 2018

Nichead 

A person (typically a high schooler) that is addicted to a nicotine substance, usually Juuls and vapes.

Freshman: "Yo can I hit that Juul real quick?"
Person: "Bro, you're such a nichead!"

Nichead by George W. Bush Is Rad February 15, 2019

Niphead 

A cat who is overly reliant on the effects of cat nip to function on a day to day basis.

Wow, Bo and Charlie are constantly getting high on nip... damn nipheads.

Niphead by RisleyP October 14, 2014

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

nibhead 

1.A nibhead is a word one could use to describe someone of either gender, including those which are not 100% sure. It is an alternative word for the offensive term knobhead or nobhead when one wishes to insult said person, without being overly offensive.
2.The nib of a pen

My Grandma is such a nibhead!

nibhead by lemon+11 May 28, 2008