SYBAU

What does SYBAU stand for in messages?

Shut your b**** a** up

Censored

SYBAU is a slang acronym used as a blunt, often joking way to tell someone to stop talking, usually online or in text messages. The phrase itself has been around since the early 2000s in hip-hop and Internet culture, but the acronym form, SYBAU, started appearing more frequently on social media and in gaming chats in the 2010s.

Today, SYBAU shows up mostly in memes, comment sections, and group chats when someone's being loud, dramatic, or saying something obviously wrong. Mostly younger Internet users who enjoy meme slang and casual profanity are the ones who use SYBAU.

Tone and context are essential in determining whether SYBAU is meant to be playful or genuinely aggressive. However, people often use it humorously, especially when friends are teasing each other or trying to shut down a wild take.

Example

i could totally beat lebron one-on-one if i trained for like, a month
bro, sybau. u get winded walking up stairs
ok, fair. but I still got a decent jump shot!

Benjamin Franklin delivering SYBAU

Related Slang

Categories

Updated October 8, 2025

SYBAU definition by Slang.net - The Slang Dictionary

This page explains what the acronym "SYBAU" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.

We are continually updating our database with new slang terms, acronyms, and abbreviations. Want to suggest a new term or an update to this page? Let us know!