"SYBAU" is an internet slang initialism that stands for "shut your bitch ass up." It is commonly used in text messaging and online messages, often as a blunt or vulgar way to tell someone to be quiet. The term is part of some slang that emerged and is popular on platforms like TikTok and Twitter. Variations in dialect may lead to similar acronyms with slightly different wordings, but the core meaning remains a rude command to be silent. This slang is associated with younger generations like Gen Z and Gen Alpha, who use creative and abbreviated language forms online to communicate quickly or express identity. It is considered vulgar and insulting in nature. In summary, SYBAU means "shut your bitch ass up" used primarily as an insult or to abruptly tell someone to stop talking.