Sarah Shahi Calls Paris Hilton a 'Horrible Excuse for a Human Being'

By Dahvi Shira

04/25/2011 at 07:00 PM EDT

Call her fairly angry.

Sarah Shahi, 31, Tweeted up a profanity-laced storm after Paris Hilton, 30, apparently failed to watch the road.

"Worst driver ever," Shahi writes. "Almost hit me, then ran a stop sign. What if there was a kid around the corner, you dumb b----."

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But the Fairly Legal star did not stop there.

Calling Hilton a "blonde piece of sh--," Shahi says in her Friday post she should "apologize to humanity."

"Horrible excuse for a human being," the former L Word star continues.

"I wouldn't be as pissed if I weren't a mom," Shahi, who has son William Wolf Howey, almost 2, says. "What an irresponsible person. What a lame existence."

A rep for Hilton did not immediately return a request for comment.