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1 definition by
BSI Observer
BSI
Short for
Batshit Insane
i.e.
beyond
crazy
see: Batshit Insane or
Bat Shit Insane
Person #1 "I just saw some chick take her clothes off and
run down
the street
naked
"
Person #2 "She must be BSI"
by
BSI Observer
June 4, 2009
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BSI
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