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1.
when a person enters a stage in their life where the presence strikes amazement at anyone who gazes at them. It combines every positive word used in our urban language into one simple word. Booni is truly a comment worth getting from a person, for it is the only word that truly explains greatness.
Boy:"That kid is so booni!" *Gapes In Amazement*
Girl: *Passes Out*
by SuperNish August 03, 2011
 
2.
The buttocks, though sometimes not literally.
Well tickle my boonis!
by Ham T. Sandwich April 07, 2009