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.
See
Random Words:
1.
spoof of BBCode tags on a forum used to boldly say "end of discussion"
we aren't going.
/discussion
See forum, bbcode,..
1.
The uniquely male sensation of having one's scrotum squished into an uncomfortably small area or configuration due to unfortunate s..