What is S.i.s.?
1.
An acronym for Sudden Insanity Syndrome
Joan Crawford had a lot of experience with S.I.S. moments.
See
2.
Self-inflicted stupidity. An injury that you caused to yourself by an act of stupidity.
Friend 1: How did you get that cut?
Friend 2: I was running with scissors down the stairs and my shoes were untied.
Freidn 1: Thats some serious S.I.S.
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Random Words:
1.
can be replaced by "you know what i mean?"
"did you get the new issue of cosmo with the 5 page spread on...ya figgin dea..
1.
N. refers to boys who end up being friends with girls they meet and never having a real relationship with any girl.
Ex.
Tom: Man, Ted ..