SYBAU
abbreviation
an angrier way to say ‘shut up’ online
What does SYBAU mean?
SYBAU (or sybau) is an abbreviation for “shut your b----- a-- up.”
Examples of SYBAU
SYBAU its a movie not a documental you weirdo lmao
—X (formerly Twitter), 17 Nov. 2025
Blocking TikTok accounts who bring performative heterosexual humiliation into foodtok. “I made my situationship dinner to convince him to make us official” “marry me chicken to convince my bf of 7 years to finally propose” “my bf packed me dog food for lunch” Sybau, I’m here for recipes.
—“google me” …girl, sybau
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Where does SYBAU come from?
Evidence of SYBAU dates back more than 20 years.
How is SYBAU used?
Sometimes with tongue in cheek, but usually with no small amount of vituperation in the midst of online arguments.
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