Acronym for "Shit You Don't Need"*
Used to pejoratively refer to anything that that can be regarded as useless, overpriced, a fad and generally all that is related to consumerism.

*Yet to be accepted by the internet community.

A very beautiful talented young woman. Makes an amazing best friend. Sometimes she needs to be pushed a little but she isn't afraid to push back. She is a great friend and would make a great celebrity.

Sydne is a very young, talented, beautiful, girl. she loves sports. she loves her friends endlessly and always wants to make them happy. She pulls all the guys and they all say she is so cute. sydne loves to laugh and have a good time and there is never a dull moment with sydne. Sydne is also short and so cute ad has a great pedicure

Most beautiful girl and if you get to know her she has an outgoing yet crackhead energy, but don’t hurt her feelings because it’ll be hard to win her back

Sydnes is a scank, but also a walking infection. It smells of death and cancer. Heard of STD's? She got 'em all.

crushing up and snorting 20 stink bugs (one at a time) within one episode length of naruto

sydn means “suck ya dead nan” if you ever say sydn to someone from britain then will cry for days and if you say it to a chav from britain they will try stab u so best kept to yourself