S.I.S is an acronym for Special Investigation Section.
It is an Los Angeles Police Department's elite tactical detective squad with a straightforward mandate: Track down the City’s most dangerous offenders and take them off the street. S.I.S. are possibly the hardest-working, most dedicated men and women Detectives to wear a badge.
Alonzo: Hey, Mark, where are you transferring to?
Alonzo: Yeah, S.I.S. Detective.
(from 'Training Day')
Means to "sit in silence" insetad of lol. Usually used if somebody sais something retarded online, its a good way to be honest. Lets face it very few actually laugh at stuff online.
xXihateyouxX: i was like "duhhhhhhh" haha
ay u guys 2003: s.i.s
suprisingly improved sequel
a movie is an s.i.s if
a) the original was brilliant,yet the sequel was better
b) the original was average and no one expected an improvment
c) the original was pure garbage and no one wanted a sequel. a monkey could make a better sequel but this sequel was actually really good
aliens and terminator 2 are s.i.s type a imo
mad max 2 is awesome, it is an s.i.s type b because the first one was quite boring
mate, the star wars prequels were such utter shyte, im glad revenge of the sith was better, it was a type c s.i.s
Self inflicted shanks:
Stab wounds that one purposely makes usually to frame someone.
Dude 1: dude he shanked me!
Nigga 1: Naa dats just an S.I.S
dude 2: he was with me he coudlnt have done it
-dude 1 walks off angry-