Top Definition
SBOOMN Shooting beverage out of my nostrils!

Response experienced when simultaneously drinking while hearing something funny, shocking or astounding.
When I watched Sarah Palin's responses to Katie Couric's questions, I was SBOOMN!

When Sarah Palin explained her foreign relations qualifications for Vice President, I was SBOOMN and ROFL.
by HarryKnottpotter May 22, 2009
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