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1.
an announcement--usually through a listhost or website (e.g., Craigslist)--signaling the presence of stuff (e.g., furniture, appliances, toys) left outside a residence and free for your taking
Curb alert: 2 VHS tapes, 1 non-working cordless phone, and 2 dining room chairs in the alley behind 1000 Anywhere St. Do not call! Just haul away, thx.
by Bergirl November 26, 2008
 
2.
An exciting event that involves the left overs from a yard sale that are now free. also makes for a great insult.
Your mom is a curb alert
by dontUwish2 July 14, 2010