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Could be used to say, It's really "happening", which in this case means it's really cool, it's off the hook, it's a lot of fun...just like hella cool would imply that it's really cool, hella happening could be used in a simillar context to mean pretty much the same thing...
That party was hella happening...(That party was hella cool)
by Cindy Kasunku May 08, 2006
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