What is Sis?
1.
1) Short for sister
2) In the song Fuck the Pain Away by Peaches, SIS seems to stand for Stay In School...
My sis went to the movies with a scumball.
"Stay in school... Cause it's the best..."
2.
Slang for sister
Me and my sis went to the movies.
3.
1.) A South African English expression roughly equivalent to the American "yech" and the Afrikaans expression "sies".
2.) An American term of endearment for a sister, now also used in other countries.
1.) Sis, man, you stink!
2.) Hey, sis, hey bro, how's Ma doin'?
4.
stay in school, from peaches song "fuck the pain away"
sis iud stay in school cuz it's the best
See
5.
SiS as in Shit Its Sunday Commonly used on sites like Facebook and Myspace
John: Aw man SiS
Kevin: Dude I know
See
6.
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''
See
7.
The Queen Bitch Hacker
"Sis & Sabbath Own you"