by njivndwkjscbiuwen December 18, 2023

Sidney Sullivan is the best girl you can have, if you know a girl named Sidney Sullivan dont hesitate just marry the girl.
She is always there for you and will love you forever<3
She is always there for you and will love you forever<3
by Sidneycs_ February 27, 2017

by Butterflyhiccup February 1, 2022

A nickname for someone mysterious and secretive. Anyone who is hiding something or is involved with hidden affairs.
Brendan: I saw a man sneaking into a bedroom at doorknob level!
Andrew: OMG he's definitely Sidney Finger
Andrew: OMG he's definitely Sidney Finger
by GUNTERCB October 6, 2013

by Acetard fan January 21, 2022

"That person is a total Sidney!"
by Flea02 February 4, 2025

Probably the worst school in Montana as half of the kids that go to this school are fake mother fuckers that like to show off there loud ass trucks and annoy the hell out of ya.
Person 1: so yea i go to Sidney High School MT
Person 2: wait what, that school is full of loud ass annoying people
Person 1: tell me about it, all they do is show off there loud ass trucks and be assholes
Person 2: atleast its not Fairview School
Person 2: wait what, that school is full of loud ass annoying people
Person 1: tell me about it, all they do is show off there loud ass trucks and be assholes
Person 2: atleast its not Fairview School
by theshstruth December 15, 2021
