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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
1. An acronym for Shut Your Bitch Ass Up
SYBAU noob!
SYBAU by Garnold5808 June 25, 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
Stay Young,Beautiful,and Unique!
''I'm sooo pretty right?
Sybau.''