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An acronym for “shut your bitch ass up.” It is most commonly overused by 9 years olds with unsupervised access to YouTube who think they’re SO “sKiBiDi sIgmA” for being able to type 5 letters on their disease ridden devices.
Commenter-1: This video was so cool!
Commenter-2: Sybau 💀
Yeah. Do you see how fucking pointless that was? Like go do your fractions homework or something
Sybau by ✨ Kameron ✨ June 17, 2025
1. Abbreviation of "shut your bitch-ass up"

2. (command) Be silent
A: I think

B: SYBAU!

A: I see how it is, B.
sybau by UrbanLinguist :) June 24, 2025
Although this definition has been altered due to social media, it's true definition is "stay young, black and unique"
SYBAU twin 🙏🏽
Sybau by Jariwari June 29, 2025
An acronym that stands for ‘Shut Your Bitch-ass Up’ which is used by pea-brained, short-minded people who have nothing else to say. This acronym has existed for a long time on the ‘net, but gained popularity and traction on the unintelligent circle-jerk social media platform known as ‘TikTok’. Users of the site, known as a species called ‘TikTokers’ have tendencies to use this acronym a lot when in dismay during an argument, or just for no reason.
Scenario 1
Person 1: (Presents a factual, logical and real-world-based argument with proper citations and evidence) So what do you have to say to that?
Person 2: sybau
Person 1: You’re so retarded I’m not even gonna talk to you anymore.

Scenario 2
Person 1: Hey dude, cool video!

Person 2: sybau
Person 1: tf did i do?
sybau by metogood2 July 3, 2025