Conservative Twitter-tracking site blasts the Fox News contributor: "Evidently the bottom of the barrel wasn’t completely scraped clean after Ann Coulter called President Obama a 'retard' yesterday."

As if calling President Barack Obama a "retard" once wasn't enough, Ann Coulter decided to double-down on her use of the offensive word in a second Twitter post on Tuesday.

"Obama: 'Stage 3 Romneysia' - because cancer references are HILARIOUS," the conservative author tweeted to her 265,000 followers. "If he's 'the smartest guy in the room' it must be one retarded room."

PHOTOS: The Top Celebrity Political Twitter Commentators

She posted her new insult Tuesday just as people across the Internet were reacting with outrage to her post-debate Twitter rant, in which she wrote: "I highly approve of Romney's decision to be kind and gentle to the retard."

The conservative Twitter-tracking site Twitchy.com blasted Coulter for continuing to use the offensive word. "Evidently the bottom of the barrel wasn’t completely scraped clean after Ann Coulter called President Obama a 'retard' yesterday," said the site. "And fancy that: She’s still not funny."

Twitchy posted a page of tweets from outraged people, noting that "it wasn't just liberals hoping to score points against Coulter who took offense."

POLL: Michelle Obama, Ann Romney at Last Presidential Debate: Who Wore It Best?

"I think we can all agree that @AnnCoulter is about as mature as a 5th grader," tweeted one woman.

And another: "@AnnCoulter I don't give a sh*t what your political views are, using the #Rword is just wrong. Your message is being lost in the hate speech."

Perhaps Coulter was just trying to sell books, Twitchy suggested -- or just get more attention. 

 

Obama: "Stage 3 Romneysia" - because cancer references are HILARIOUS.If he's "the smartest guy in the room" it must be one retarded room.

— Ann Coulter (@AnnCoulter) October 23, 2012