SIS

An online term that depects ''Smile-In-Sight'' used when you don't go as far as to laugh, but a smile still spreads upon your face.

Janet: ''Stacy totally spilled Kool-Aid all over her dress!''

Wayne: ''SIS. That makes me smile''

by Kevin H***ley July 11, 2008

SIS

Secret Internet Shorty, an acronym used to describe pictures of a guys dick but using angles or photoshop to make appear significantly bigger than it really is.

Look at this dickture I just got from this guy! I know know for a fact he is a SIS!

by IamIwhoIam August 17, 2011

SIS

Due to the vast majority of lies which happens every time a person types 'LOL' in texting or the internet, SIS (Smile in Silence) is a much more proper use in times when one does not actually laugh when typing 'LOL'. Though, this may suggest that the person is not as fun as he did not actually laugh.

A: Yo, B, I just tried walking thru at a drive thru.
B: LOL, what happened?
A: B, stop lying bro, don't tell me you actually laughed at that message. SIS
B: Jeez, such a stickler...So what happened?
A: They told me that they only viewed car owners as acceptable customers.
B: SIS

by Shinigami Prophet July 11, 2014

Si-Si

She says she doesn't see it, but I think people that don't even know her can see it from a mile away. She has a great smile that can make your day, and she seems to always have a smile to spare. She is very nice and caring and doesn't judge you. She is very cute and has a lot of little things that she does that can make you smile or laugh. She is very smart and always knows the right things to say. She is fun to hang out with and talk to. She is a very amazing person for so many reasons. She says she doesn't see it, but she should. She is a good singer too. Si-Si is perfect in every way and I am so glad that I get to call her my friend.

What song is this Si-Si?
What are you talking about this is one of your favorite songs!

by fomachu December 16, 2018

si si si si no no no no

sleep paralysis, possessed

John wakes up in bed cant moves and sees a figure then goes: si si si si no no no no

by Error...'uwu' December 13, 2022

sis-sis

A best friend that you can call sis-sis instead of sis. Female version of brobro. Guys can have a best friend that is a girl that you can call sis-sis and nothing is going on or no one is going out.. Normally if you are best friends you can treat her like a real sister. You can love her like a real sister say I love you like you say to a real sister. Basically best friends.

Jason: Wow Chelsea, we have been friends for years now and I proud to call you my sis-sis.

Chelsea: Thanks Jason! Can I call you brobro?

Jason: Sure sis-sis.

Chelsea: Love ya brobro.

Jason: Love ya sis-sis.

by Thekidwhoisakidthatgoestomps January 25, 2011

si-si

a philosopher of sorts. looks into a mirror and will see many reflections.

resembles a chilly philly dip; sweet and TANGY.

yo i'm si-si. LIKE A DAISEY! give me shit and i'll shit on your face. verbal diarrhoea type shit.

by lawren August 02, 2006