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acronym: Good Sounding Bad Idea. An idea that sounds exciting or plausable, but upon further thought or execution is revealed to be astoundingly dumb and/or dangerous.
1 - Brian suggested all 20 of us go to the party, when only he was actually invited.
2 - Cat decided to ride her bike to school as exercise, disregarding the fact it was 10+ miles away and she needed to be there in 30 minutes.
GSBI by skyywise May 26, 2004
Related Words
Good Sex, Bad Idea

Self explanitory...leads to disease, pregnancy, and unwanted phone calls
When Bruce awoke and looked at Geoff, he realized he had fallen for GSBI.
GSBI by Joe Hasbeen October 16, 2005
The sexy, awsome people of GEEKSTINKBREATH.NET. Who rock and, are cooler than you probly.
GSBians are cooler, funnier, hotter, awsomer, un-suckish,and just rock more than you every will in your whole small entire life and everybody else you will meet.
gsbians by Kairi June 19, 2006
An awesome group of people who for the most part are Green Day fans,but they don't have to be.
gsbians: bored~to~death, flyday,i'm so emo I shit eyeliner
gsbians by Ally June 20, 2006
Noun

People who belong to the site Geekstinkbreath.net

More than half of them get their shorts in a bunch when someone disses their opinion.They can't get over the fact if someone hates green day.

Some of the kids are open-minded.Some are irrational.

we're awesome,yet we can be losers.
Personally,I think only 5% of the people have brains,and get passed that.
Kid 1:I HATE GREEN DAY! BUT THIS IS A KICKASS SITE;I'll still be one of the gsbians!
hot headed kid:ZOMG! GET OFF THIS SITE!
rational one:-_- Who the fuck cares if he hates green day?
gsbians by andrea June 20, 2006