SIASD 

Pronunciation: sahy-azd

Shorthand for the phrase, "Stupid is as stupid does."

Often used to mock individuals for saying/doing dumb things.

Jacobo, Anthony, and Carlos walk by the science room.

Minutes later...

Carlos: Hey, we should go in the science room?
Anthony: We passed it like 5 minutes ago.
Carlos: Did we go in?

Jacobo and Anthony look at each other dumbfounded, and then stare back at Carlos.

Anthony and Jacobo: SIASD!

SIASD by Dr. Gresser Met Kurt Vonnegut February 8, 2021

Siasd 

Pronounced: (sea-asd)
A term loosely defined as "stupid is as stupid does". Despite this apparently obvious explanation, the full usage and depth of meaning cannot be achieved with the English language, the profundity of which is as limitted as the people this word attempts to describe.

Georgia High School Graduation Test
3/20/2007
SIASD

or

"Mr. Armstrong, why were they called the Planes Indians?"
"SIASD, son."

Siasd by Icarus_on_Fire April 7, 2007

Silsden 

Small town in West Yorkshire, mainly known for its pubs and nightlife.

A nice quiet country village during the week, turns into an animalistic drinking zone come Friday evening.

Chavs can be found lurking in areas such as the park, graveyard, school playground and the memorial... usually with a bottle of lambrini or cider and a joint.

The women drink pints and the men fight, usually outside the Robin Hood pub on a weekend.

The people of Silsden dont care for outsiders and many residents dont like to leave the place, even though they complain about it being really shit.

Silsden can be quite a good night out if your into that sort of thing. everyone knows everyone and if you fancy a party after the pub there is usually some form of house party/ drug session goin on somewhere!

Most of the females from silsden are hairdressers or beauty therapists and the lads tend to be brickies or labourers, or they make a career of working in the co-op. (also known as the cwarp by locals)

"fancy a pint in Silsden?"

"erm.. no!"

Silsden by hatttttieeeeeeeee August 20, 2009

simsdi

Simsdi is an acronym for “Slow-minded Idiotic Moronic Silly Dumb Imbecile”, Intentionally redundant to so that even a simsdi knows they are silly

Kiran is a simsdi because she took 4 hours to write one sentence of her paper

simsdi by OffensivePseudonym October 7, 2022

siason 

sans. aka lil bitch thats going to coral reef. known for resembling ricegum as people said.

no one:

siason: swag!

siason by jeremy converse May 23, 2019

sdasda 

when you randomly type stuff in urban dictionary

guy 1: im bored
*searches up sdasda*

sdasda by bruhboi694201337 March 7, 2021

Siad 

Simply somebody who was not able to spell said correctly.

John: Hey listen, I siad that you need to change the tires earlier!

In this case, John is a Siad.

Siad by LoneWolf38 October 5, 2021