Sauce is imageboard slang for "source," used to ask where an image, clip, or claim came from.

Where did Sauce come from?

It comes from a 2004 4chan word filter that automatically swapped "source" for "sauce," inspired by a chatroom scene in Ghost in the Shell: Stand Alone Complex.

What does Sauce mean?

It means the same thing as "source," i.e. the original artist, video, or context behind a piece of unattributed content.

How do you use Sauce?

Reply to an unsourced post with "SAUCE?" or "SAUCE PLZ," often in all caps and paired with modifiers like ZOMG, OMG, or PLZ.

Is Sauce still popular?

Yes, it is a classic piece of imageboard slang that has stayed in regular use across anime and art communities since the 2004 4chan word filter era.

Sauce

2004slang termclassic

Published September 26, 2026

Sauce is imageboard slang for source, a one-word demand for attribution on unsourced images, clips, or claims. The term jumped from a 2002 Ghost in the Shell: Stand Alone Complex chatroom joke into a 2004 4chan word filter and became one of the longest-running pieces of imageboard vocabulary.

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Overview

On 4chan and adjacent imageboards, "SAUCE?" or "SAUCE PLZ!" is the reply of choice whenever a poster drops an interesting image, clip, or claim without attribution3. The word usually appears in all caps, often paired with modifiers like "ZOMG," "OMG," or "PLZ" for extra pleading energy. Its purpose is simple: pin down the origin of unsourced content, whether that means an artist name, a manga chapter, a hentai title, or the source video of a reaction GIF.

Fan-run tools built on the term followed, including the reverse-image search engine SauceNAO, the request site SaucePlz, and Zomgsauce, all riffing on the filter-era joke3. The word's staying power comes from raw utility, image-heavy communities need a fast one-word way to ask "where is this from?"

Gallery

Origin & Background

Platform

4chan (via Ghost in the Shell: Stand Alone Complex anime reference)

Date

2004

The "sauce = source" gag traces to Ghost in the Shell: Stand Alone Complex, the 2002 anime that first aired on Cartoon Network's Adult Swim in November 20043. In episode 9, "The Man Who Dwells in the Shadows of the Net," a virtual-reality chatroom scene shows one avatar asking for sources while another mocks him with the words "sarce" and "soy sauce."

Shortly after the U.S. broadcast, 4chan users started spamming "SOURCE!" and "SOURCE PLZ!" on unattributed posts. Site founder Moot, inspired by the anime, added a word filter that auto-replaced every instance of "source" with "sauce"1. The filter was eventually retired, but by then the substitution had already stuck as everyday slang.

How It Spread

The Lurkmore wiki catalogued "sauce" as one of 4chan's active word filters, listing it alongside site gags like "loli" → "duck" and "teh" → "fuck"2. A DQN thread on 4-ch.net preserved a running list of the same filters, tracking every change the moderators rolled out and confirming the source-to-sauce swap1. On December 26, 2004, Urban Dictionary user DarkHowie posted a top definition reading "Another way of saying source," an entry that later pulled in more than 5,300 upvotes4.

From 4chan the slang bled out to other imageboards, anime forums, and mainstream image-sharing sites. By the late 2000s "sauce" was the go-to one-word request across communities that trade in unsourced art and clips, and dedicated infrastructure grew around it, most notably the SauceNAO reverse-image tool, which lets users hunt down the origin of an image with a single upload.

Timeline

2002

Ghost in the Shell: Stand Alone Complex begins airing in Japan.

2004-11

The anime debuts on Cartoon Network's Adult Swim in the U.S., including episode 9's "sarce"/"soy sauce" virtual-chatroom scene that inspires the joke.

2004

4chan founder Moot adds a word filter that automatically replaces "source" with "sauce," locking the slang into site culture.

2004-12-26

Urban Dictionary user DarkHowie publishes the top "Sauce" definition, later collecting over 5,300 upvotes.

2005

The Lurkmore wiki documents "sauce" among 4chan's active word filters, one of the first outside references to the slang.

How to Use This Meme

Typical usage is a short, all-caps reply to a post that shows an image, video, or fact without attribution: "SAUCE?", "SAUCE PLZ," or "ZOMG SAUCE" all work. It is a common convention to stack pleading modifiers like PLZ, OMG, or ZOMG for tone, and to keep the request to a single line so it stands out inside a fast-moving thread. On art or anime boards the expected answer is an artist handle, a doujin/manga title, or a link to the original video.