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2.
an extremely cool person, place, or thing; used to describe something beyond cool; outrageously fantastic;

(syn) excellent, dandy, divine, glorious, groovy, hunky-dory, keen, marvelous, neat, nifty, sensational, swell
David told me The Transporter is so booty.
by sobooty June 20, 2004
 
1.
ridiculous or inane forum thread, post or remark.
This thread is so booty!
Your post is so booty!
I think your remark was so booty!
by Mike Parkhill December 01, 2006