Where did Oxford Comma come from?

The punctuation rule was set down in the 1905 Oxford University Press Style Guide, and the internet meme grew out of Reddit posts starting with a 2011 defense on r/reddit.com by user toastplease[4].

What does Oxford Comma mean?

'Oxford Comma' refers to the specific comma that goes between the second-to-last item in a list and the word 'and' or 'or,' as in 'red, white, and blue'[3].

How do you use Oxford Comma?

You add a comma before 'and' or 'or' in a list of three or more items, so 'I invited my parents, Ayn Rand, and God' stays four subjects instead of collapsing into a strange biographical claim[1].

Is Oxford Comma still popular?

A 2014 FiveThirtyEight poll found that 57% of Americans preferred the Oxford comma, and the debate is still a classic recurring topic on Reddit and grammar Twitter[4].

Oxford Comma

Q: What is Oxford Comma?

The Oxford Comma, or serial comma, is a comma placed before the coordinating conjunction at the end of a list of three or more items, and online it doubles as a running grammar-debate meme[1].

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Published September 20, 2026

The Oxford Comma, also known as the serial comma, is the comma placed before the coordinating conjunction at the end of a list of three or more items. Debated since it was codified in the 1905 Oxford University Press Style Guide, it became one of the internet's favorite grammar arguments, spawning a wave of image macros, Reddit threads, and a Vampire Weekend single that turned punctuation into pop culture.

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Overview

The Oxford Comma, also known as the serial comma, is a mark placed before the coordinating conjunction at the end of a list of three or more items, as in 'eggs, bacon, and toast'1. Fans argue it kills ambiguity, while opponents say it clutters clean prose and can introduce fresh confusion of its own4.

Online, the debate is fought almost entirely through image macros. The classic format pairs two versions of the same sentence, one with the comma and one without, showing how a missing mark can accidentally imply that 'my parents, Ayn Rand and God' are the same three people. Reddit's r/funny popularized this side-by-side template with a widely upvoted breakfast diagram in 20124.

Origin & Background

Platform

Oxford University Press Style Guide (origin) / Reddit (viral spread)

Date

1905

The serial comma was formalized in the 1905 edition of the Oxford University Press Style Guide and has stayed part of the house style ever since, which is where it picked up the 'Oxford' name4. Its jump from stylebook footnote to internet argument came in stages. On May 26th, 2008, indie band Vampire Weekend released 'Oxford Comma' as the third single from their debut album, opening with the line 'Who gives a fuck about an Oxford comma?' and pushing the term into pop culture2.

The meme format itself is not attributable to a single creator. It grew out of a series of Reddit posts starting on March 29th, 2011, when Redditor toastplease submitted a defense of the comma to r/reddit.com4.

Oxford Comma

Overview

Origin & Background

How It Spread

Frequently Asked Questions

References (5)