Bump is a one-word forum reply used to push a thread back to the top of a message board index.

Where did Bump come from?

The exact origin is not documented, but one of the earliest surviving references is a StraightDope forum thread from 2000 titled 'Bumping Threads,' where users already treated the slang as familiar.

In forum slang, 'bump' means to move a thread to the top of the forum index by posting a reply, often just the word itself.

Post a short reply, typically just 'bump,' in a thread you want to resurface. Most forum software sorts by most recent post, so the reply pushes the thread back to the top.

Is Bump still popular?

Bump is a classic forum term that was widely used across English-language message boards by the early 2000s and stayed common on traditional forums and imageboards.

Bump

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Published August 16, 2026

Bump is a one-word forum reply posted to push a thread back to the top of a message board index. The slang was already familiar to internet users by 2000 and became standard shorthand across phpBB, vBulletin, and Chan-style imageboards throughout the decade.

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Overview

Bump is a one-word forum reply posted to push a thread back to the top of a message board index4. Most forum software sorts threads by most recent post, so adding any reply, even just the single word 'bump,' resurfaces the discussion for other users.

The term works as a verb ('I bumped the thread'), a command ('bump'), and a noun ('needs a bump'). On imageboards like 4chan the mechanic matters more, since threads without replies eventually get pruned. Some communities accept bumping to remind readers of an unanswered question, while others treat pointless bumps as spam3.

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Origin & Background

Platform

Web forums (early 2000s) / Imageboards (later spread)

Date

2000

The precise first use of 'bump' as forum slang is not documented. Internet netiquette guidelines published in October 1995 include no reference to the practice, suggesting bumping had not yet spread across Usenet or mailing lists2.

One of the earliest surviving references is a StraightDope forum thread titled 'Bumping Threads' posted in 2000, where users treated the slang as already familiar1. The first Urban Dictionary entry for 'bump' was submitted on February 12, 20034.

How It Spread

Through the 2000s 'bump' spread across English-language message boards and became standard shorthand on phpBB, vBulletin, and Invision-style forums3. Chan-style imageboards where inactive threads get pruned kept the practice directly useful, and free image hosts let users post reaction images featuring just the word 'bump,' turning the reply into a small image macro series.

Communities split on acceptable use. Urban Dictionary's 2003 entry defined a bump as a 'pointless reply, usually to one's own thread,' matching how many users viewed the practice4. A folk etymology treats 'bump' as an acronym for 'Bring Up My Post,' but this is a backronym that stuck retroactively3. Reminding a thread of an unanswered question was generally accepted, while bumping only to raise visibility was often treated as spam1.

How to Use This Meme

To bump a thread, post a short reply, typically just the word 'bump,' in a discussion you want to resurface. Because most forum software orders threads by most recent post, the reply pushes the thread back to the top of the index. Common conventions include only bumping your own thread, waiting a reasonable interval before doing it again, and adding a real question or update rather than a blank reply on forums that discourage low-content posts.