silly duffer brother 

"silly duffer brother" or "SDB" for short can be used as a noun or adjective to describe an extremely idiotic person (also a nitwit or fool) or an extremely idiotic action.

SDB combines Aussie slang (duffer) and incorporates a reference to the world renowned Duffer Brothers (American twin brothers who write and direct science fiction films, horror films and television shows - including Stranger Things).

Girlfriend: "I can't find my phone again!"
Boyfriend: "It's in your hand you silly duffer brother (SDB)!"

silly duffer brother by Horatio Bumbus July 26, 2017

Silly Quasimodo 

when someone does something so silly, like when Quasimodo threw rocks at people. (make sure you pronounce the U)

someone: *kills someone*
you: what a silly Quasimodo

Silly Quasimodo by yeetsapotato June 3, 2019

Silly happy fun time 

A euphemism for masturbation.

Eyo, Carlton. It’s silly happy fun time

Carlton: stfu I don’t know you bruh. Who is you? Get out of my house also

Silly happy fun time by The Grumpy Clatt December 9, 2019

Silly Motherfucker

A Silly Motherfucker with his arms in the air. First and Lastly featured on WilburSoot's " I Trapped 100 players in a bird cage " where he sees the Silly Motherfucker with his arms in the air.

WilburSoot : Silly Motherfucker with his arms in the air. Silly Motherfucker with his arms in the air! (go away) Silly Motherfucker!!!

Silly Motherfucker by TheIcePea April 16, 2021

silly sally

(noun) a person who acts goofy / high

people obsessed with urbandictionary.com are silly sallys
*cough* jen too *cough*

silly sally by fijawi December 23, 2004

Silly Billy With No Willy 

(noun) a goofy man (not nessicarily named Billy) who acts gay ormetrosexual. Sometimes said as an insult but usually just as teasing.

"You're a Silly Billy With No Willy!"

Silly Billy With No Willy by Santas Sexy Helper July 30, 2004

silly person 

Quite possibly the weakest insult one can think of.

Be Quiet!......silly person

silly person by Im lost in a August 27, 2005