Dummiest 

The word dummiest means you are really dumb like even dumber than the dumbest .

Jaiden is the dummiest

Dummiest by Dummiest January 31, 2020

Dumisani 

He's the most loving and selfless person. Very considerate and sweet. Oh and cute too

He's Dumi that one

Dumisani inkosi ngaso sonke Iskhathi

Dumisani by Lindisani August 17, 2021

Dudies 

In reference to two or more best bro’s

“What’s up dudies you ready to send it or what?”

Dudies by chHAad January 8, 2021

Internet for Dummies

America Online

He was too stupid to use a real ISP, so he got the Internet for Dummies

Internet for Dummies by DonH October 2, 2003

Dumbest Common Denominator 

The most logically-challenged portion of the general population for which the most obvious warnings, posts, signs and instructions must be written or designed to avoid catastrophe.

On the lid of the coffee cup: Contents may be hot.
On a package of kitchen knives: Caution! Items are sharp.
On a trash bag: Do not place over head.
At a railroad crossing: No parking.
On a clothes dryer: Do not place children or animals inside.

"This is the dumbest sign I've ever seen. Do they think I'm a complete moron?"

"Dude. Gotta plan for the Dumbest Common Denominator."

Dumbest Common Denominator by Upallnightagain September 25, 2011

dumbest place on earth

Youtube comments section.

A: I just read that youtube comment and felt like my IQ dropped by like 10 points.
B: Youtube comments section is literally the dumbest place on earth. I'd suggest you read pornhub comments instead.
...
A: Thanks man, that was really helpful advice.

dumbest place on earth by rjlovesu June 23, 2020

Mask Wearing for Dummies 

The long-overdue title for millions of anti-maskers and maskholes around the world, whose selfish actions only prolong the coronavirus pandemic on earth, and lead to more infections and deaths—they need to come to terms that their constant refusal to don a face mask in public has serious consequences, such as fines, push-ups, and jail sentences (or even caning or deportation in some extreme cases).

The author of “Mask Wearing for Dummies” hinted to his publisher that he’s concurrently writing “Lockdown for Dummies” and “COVID-19 Vaccines for Dummies” targeting at millions of covidiots, particularly the diehard Trumpists and hardcore QAnonists from the red states, who get most of their corona advice from their Maskhole-in-Chief.

Mask Wearing for Dummies by MathPlus May 1, 2021