What is BOOM BOOM PARTY ROOM THAT'S A GOODA BARFIN?

When you are the Boomer in the Left 4 Dead series and you explode in a room, covering the humans in your bile.

(playing xbox)
...... I just owned all of those guys.
BOOM BOOM PARTY ROOM THAT'S A GOODA BARFIN!

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BOOM BOOM PARTY ROOM THAT'S A GOODA BARFIN - video