Yesterday, Sen. Elizabeth Warren eviscerated Donald Trump in a lengthy speech at the American Constitution Society, Thursday.

"Donald Trump is a loud, nasty, thin-skinned fraud who has never risked anything for anyone and serves nobody but himself."

"And you know, when that is your business model, sooner or later you are going to run into legal trouble. And Donald Trump has run into a lot of legal trouble. Ah yes, Trump University, which his own former employees refer to as 'one big fraudulent scheme'."

Some day he'll learn that just throwing out insulting nicknames will not cut it in a presidential election.

Pocahontas is at it again! Goofy Elizabeth Warren, one of the least productive U.S. Senators, has a nasty mouth. Hope she is V.P. choice.

— Donald J. Trump (@realDonaldTrump) June 10, 2016

Our Sarah P predicted that he'd break out the "Pocahontas" smear again on Twitter and he did.

This was a pretty pathetic tweet, even for him. I wonder if the campaign is getting to him?We can be pretty sure Elizabeth Warren is.

UPDATE: Yesterday it was a joke. Today, Warren's tweet? Not so much.

No, seriously -- Delete your account. https://t.co/O1u7oc0jAR

— Elizabeth Warren (@elizabethforma) June 10, 2016

UPDATE: Donald Trump doubled down on his "Pocahontas" smear by "doubling down" on it.

. @HallieJackson Q: Any regrets on calling (@elizabethforma) 'Pocahontas,' Mr Trump?

Trump: "None whatsoever." pic.twitter.com/tOnvWraU1i

— Frank Thorp V (@frankthorp) June 10, 2016