Legendary Tweeter - Iowa Sen. Chuck Grassley - Hanging it Up? Say It Ain't So!

The mysterious tweets from long-time Iowa Senator Chuck Grassley could be no more.

The 79-year-old Republican, whose been called a "Twitter genius" by some, says he's giving up the obscure posts that have inspired a cult-like following and even his own hashtag (with the help of Stephen Colbert): #igotthetweetslikegrassley.

But, it appears he's closing that chapter of his Twitter life.

"I try to be more policy-oriented now than I used to be, not every little personal thing," Grassley told BuzzFeed.

Grassley has left his mark on the Twitterverse with personal observations, interesting abbreviations and out of left-field tweets that can rile the left and at other times leave liberals and conservatives alike trying to decode his syntax.

"Constituents askd why i am not outraged at PresO attack on supreme court independence. Bcause Am ppl r not stupid as this x prof of con law," Grassley tweeted last year.

Translated: "Constituents asked why I am not outraged at President Obama's attack on Supreme Court independence. Because American people are not as stupid as this ex-professor of constitutional law."

Comedian Colbert had some fun with Grassley calling his tweets "avant-garde stream of consciousness poetry" a la "Jack Kerouac typing 'On the Road.'"

Grassley said the switch was after increasing receipts of snarky and nasty responses to his tweets.

In January, after the senator once again set Twitter aflutter with a mysterious 'U' tweet, which garnered several funny - but at times rude - responses for those in the Twitterverse.

"I think it's a misunderstanding of what people thought my purpose was. And then, I was trying to abbreviate as much as I could, and I think people thought I didn't know how to spell, so I try not to abbreviate as much anymore, unless it's a kind of common abbreviation," he told Buzzfeed.

Since joining Twitter, Grassley has handled his account himself, opposed to handing it off to a staffer. He has more than 66,000 followers.

"Whether you've got this social media you're talking about or you do it the old-fashion way, what's this all about? It's all about making representative government work," Grassley told Buzzfeed noting "What's representative government? Its got to be dialogue from those that have been elected and those we serve. So Twitter's got to be an example of everything I do to encourage conversation."