means “Senior year baby”

SYB means steal your bitch, the is basically steal someones girl. when a girl has a man and you want you or when you talkin shit to another dude

abbreviation for suck your balls. Alternative: SMB, suck my balls.

Comeback.

SYB is an acronym for Shave Your Bush (bush meaning pubic hair on a girls vagina.

An acronym for "See You Bye" which is another phrase for goodbye.

Used at the end of a message to let someone know you're leaving

Significantly Younger Being. Another term for LG's

Anyone can drop a normal mock on someone like "you're ugly" or "you're stupid" but it takes a special someone to drop a dirty syb mock involving sybians, butt juice, vag juice and big round black sybian heads.

Any shit talk that involves sybian machines can be classified as a syb mock.