Urban Dictionary: Sis

Sis

1. A term used as a confidence booster by black females in order to 'hype' their self-esteem.

2. A phrase used frequently by close female friends who share a special bond from others.

3. A term used by a female to reassure another female that she will always be there to defend, honour and keep her from committing bad decisions.

Kidist, you mah sis and always will be. Happy Birthday boo 💛

via giphy

by kidoblack February 19, 2018

Get a Sis mug for your mate Rihanna.

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 10, 2008

Get the SIS neck gaiter and mug.

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 16, 2011

Get the SIS neck gaiter and mug.

S.i.S.

Shit is Situational.
(forum speak)

Person A: (When z1,) X > Y.
Person B: But when z2, Y > X!
Person C: *facepalm*C'mon guys, S.i.S.

by ShamayaXI September 10, 2009

Get the S.i.S. neck gaiter and mug.

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 10, 2014