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Acronym for Holy Fucking Shit Balls! Usually used when one is incredilous or scared.
*Person One walks down street*
*Toothless man pops out of bushes*

*Person One: HOLY FUCKING SHIT BALLS!*
*Person One runs like hell*

Later, on MSN:

Friend: Hey, how was ur night?
Person One: OH, man, hfsb, this man popped out of the bushes...

And it goes on like that.
by VoldemortsGirl June 27, 2010
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