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1.
An event that is considered fantastic but has happened randomly, by suprise and/or all of a sudden.
A 5 dollar bill falls from the sky.
guy 1: whoa that 5 bucks came out of nowhere
guy 2: thats bamtastic!
by Justin Grimes May 31, 2007
 
2.
the 3rd most hottest girl in a large group of girls.
if you get the bamalicious one and he gets the bamarific one, i guess ill take the bam tastic one
by sean hudspeth July 23, 2004
 
3.
awesome or like really kool
1.thats a bamtastic band
2.thats just bamtastic
by Paige January 25, 2005