What is My Face When (MFW)?

MFW is a shorthand tag used on 4chan and other message boards, typically prefacing a post with a reaction face image or a described feeling. The variant TFW (That Face When) covers third-person or hypothetical reactions.

Where did My Face When (MFW) come from?

The earliest archived >mfw post appeared in a 4chan /mu/ music board thread titled 'Syd' on November 29, 2009. The tag then spread across other 4chan boards over the following months.

What does My Face When (MFW) mean?

MFW literally means 'my face when', and it describes the expression a poster imagines making in response to a given situation. Users pair it with a reaction face image to convey the emotion visually.

How do you use My Face When (MFW)?

Open a post with >mfw followed by the situation being reacted to, often with a reaction image attached. The >tfw variant is used when narrating someone else's reaction.

Is My Face When (MFW) still popular?

MFW is a classic reaction-image tag rather than a trending one. After taking hold on 4chan in late 2009, it settled into Reddit's r/mfw and Tumblr's reblog culture through the early 2010s and stayed part of imageboard shorthand.

My Face When (MFW)

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Published September 7, 2026

My Face When (MFW), also written as That Face When (TFW), started as an opening line for 4chan reply posts in late 2009 before spreading to Reddit, Tumblr, and gaming forums. The greentext-style tag pairs a described situation with a reaction face image, and it laid the groundwork for the wider vocabulary of feelings-based caption memes.

reaction memes 4chan memes internet slang origin memes late 2000s memes facial expression memes

Overview

The format works by prefacing a post with >mfw and either describing a situation in text or attaching a reaction face image that stands in for the poster's expression3. Threads on 4chan often collect dozens of >mfw replies to a shared prompt, turning the board into a running feelings check-in where each user picks a face to represent their reaction1.

Common variations include >tfw (that face when), used when the reaction belongs to someone else or a hypothetical person, and greentext stories that close with a >mfw punchline2. Reaction faces paired with the tag range from MS Paint drawings like Feels Guy to celebrity screencaps and cropped cartoon panels, and the tone shifts from smug to horrified to deadpan depending on which face gets picked.

A related snowclone, 'My Face When X Calls Y Z', came out of 4chan's /v/ board and pokes fun at word-usage differences across English-speaking countries, usually attached to a shocked or smug reaction image3.

Gallery

Origin & Background

Platform

4chan (originated) / Reddit, Tumblr (viral spread)

Date

2009

The earliest archived >mfw post traces to a 4chan /mu/ music board thread titled 'Syd', dated November 29, 20093. The tag spread across other 4chan boards through late 2009 and into 2010, riding the general convention of using > (greentext) as a post prefix. Most early examples only survived through third-party imageboard archives, since 4chan does not keep threads long-term.

How It Spread

Urban Dictionary added an entry for >mfw on June 12, 2010, describing it as shorthand for the reaction face a poster would make2. Around the same period, someone registered MyFaceWhen.com in March 2010 as a reaction-face collection site1, and a separate database launched at MyFaceWhen.net in March 2011 as a reaction-image reference4.

By April 2011 the tag reached Reddit, where the r/mfw subreddit collected image posts using the format5. Tumblr users adopted the mfw and tfw tags for their own reblog reaction culture, giving the shorthand a second home outside imageboards6. Forums like Terraria Online, Bungie, and Xbox360 Achievements also ran 'My Face When…' threads as icebreaker games3.

How to Use This Meme

A typical MFW post opens with >mfw followed by either a described situation or a reaction face image showing the poster's imagined expression1. The related >tfw tag is used when the reaction belongs to someone else or a hypothetical person2. Common convention is to keep the description short and let the paired face do the work, though longer greentext stories often close with a >mfw punchline image.