What does SGI mean?
Still got it
Other definitions of SGI:
All of our slang term and phrase definitions are made possible by our wonderful visitors. If you know of another definition of SGI that should be included here, please let us know.
How to use the term SGI:
There are no example uses of SGI at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

AASHTA
As always, Sheldon has the answer

RUGAY
are you gay

=/=
Not equal to

CAUSE
Because