Top Definition
To warn someone in the subject line of an email that they shouldn't read it with a mouthful of anything, or it might wind up on their screen, or keyboard...

"A little joke for you >Spew Alert<"

"Damn, Dave should have given me a spew alert before mailing me the goatse, I need a new keyboard"
by MedPig October 26, 2007
6 Words related to Spew Alert

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