Dumb as rocks 

Referring to someone that has no intelligence. No common sense. Someone who is just dumb, as rocks have no intelligence.

Neil: Dude you gotta check out this new car I got!!
Bob: What kind of car did you get??
Neil: A black one, it's awesome.
Bob: (thinks to himself; "this dude is dumb as rocks.")

Dumb as rocks by cpetkunas June 30, 2020

Dumb as a bag of rocks 

Extremely dumb.
Popularized on " The Big Bang Theory".

All the guys I knew growing up were as dumb as a bag of rocks.

Dumb as a bag of rocks by Judge dredd7 November 17, 2011

dumb as a box of rocks 

See "dumb as a bag of rocks" ... my deceased dad used to use the term alot.

You're about as dumb as a box of rocks ... /duh!

dumb as a box of rocks by Hippy420Lover53 May 14, 2018

dumb as a rock 

Terminally stupid.

The perp was dumb as a rock, and confessed in five minutes.

dumb as a rock by Octopod November 8, 2003

Cheeks 

An Irish phrase meaning shit, derived from ass
(Not to be confused with the literal description of one's buttocks)

"Did you hear the song Aylek$ dropped?"
"Hardly. Her music is absolute cheeks."

"My boyfriend say LaFlame is cheeks."
"Tell your boyfriend I said it's his mixtape that's cheeks."

Cheeks by thecartisan April 26, 2020

sans sheriff 

Lawless use of fonts or typography, with no regard to aesthetics or legibility

I'm putting this CV straight in the bin. Written totally sans sheriff.

sans sheriff by Jamarley July 3, 2019

Breadhead 

Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".

A breadhead is like a crackhead, but for money instead of crack.

Breadhead by 🅱️ U S 3 4 8 March 30, 2022