Leaving your dog in the car is not cool: dog

This pup gets the ultimate revenge when it is left in the car in Ferndale, Calif.

He lays on the horn and gets everyone's attention, including his owner. 

Also today on Trending Now, it's the South by Southwest-edition of Lie Witness News on Jimmy Kimmel Live. Jesse Tyler Ferguson talks to Seth Myers about watching the kid actors on Modern Family growing up. Ben Stiller tells David Letterman about teaching his son stripper etiquette. Chris Pine shares his Christopher Walken impression with James Corden on the Late Late Show. Elizabeth Banks talks to Jimmy Fallon about raising her two boys, and Ellie Kemper geared up for Madonna Week on The Ellen Show.

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