A hashtag meant to talk up Hillary Clinton's qualifications for the U.S. presidency quickly went sideways, resulting in a late-night Twitter fight between her supporters and those of Bernie Sanders.

#HillarySoQualified was created by backers of Clinton after Sanders responded to a new round of attacks from Clinton at a rally in Philadelphia.

"She has been saying lately that she thinks I am quote-unquote not qualified to be president," Sanders said.

Clinton had questioned Sanders' qualifications as a bone fide Democrat and for the presidency earlier in the day, but stopped short of saying he was not qualified.

"Let me just say in response to Secretary Clinton, I don't believe that she is qualified if she is through her super PAC taking tens of millions of dollars in special-interest money," Sanders said.

"I don't think you are qualified if you have voted for the disastrous war in Iraq," he continued, referring to Clinton's 2002 vote as a U.S. senator.

Kim Frederick, a Clinton supporter in Houston, said she was "livid" at the remarks of the Vermont senator.

"Just beyond fiercely angry about this, and I could barely control myself," she said in an interview with the Washington Post.

So, started a hashtag and posted some well-worn memes about Sanders' accomplishments.

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> she got 8M children insured while you renamed two post office boxes. <a href="https://twitter.com/hashtag/ImWithHer?src=hash">#ImWithHer</a> —@kimfrederi

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> she could send him cliff notes for his interviews so he doesn't look so unprepared and utterly out of his league —@kimfrederi

Other Clinton backers picked up on the hashtag, which eventually became the top worldwide hashtag Wednesday evening.

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> <a href="https://twitter.com/BarackObama">@BarackObama</a> Chose her to lead America's foreign policy and diplomatic agenda as U.S. SecState! <a href="https://t.co/9q8fncwTLz">pic.twitter.com/9q8fncwTLz</a> —@eaedmonf

First Lady. Senator. Secretary of State. She WILL be the 45th president and the FIRST woman president! <a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> —@ScottPoi

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> the American people seem to think she should be president. <a href="https://t.co/e9OcfTiA24">pic.twitter.com/e9OcfTiA24</a> —@EmmyA2

REMINDER: <a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> that Bernie voted to confirm her as Secretary of State. <a href="https://twitter.com/hashtag/ImWithHer?src=hash">#ImWithHer</a> <a href="https://t.co/ixA0K0WgWI">pic.twitter.com/ixA0K0WgWI</a> —@TheBaxterBean

What able and professional woman hasn't had a mediocre old white dude with fewer credentials question her abilities? <a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> —@scott_brawley

However, Bernie boosters, noted for their social media acumen, then picked up on #HillarySoQualified, using it ironically and posting well into the wee hours.

By the morning, more than 170,000 tweets had been posted using the hashtag.

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> <a href="https://twitter.com/greenpeaceusa">@greenpeaceusa</a> put her name on a blimp. Pretty, pretty, good. <a href="https://t.co/KeBvKRX8cL">pic.twitter.com/KeBvKRX8cL</a> —@People4Bernie

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> she's a better Republican than a lot of them <a href="https://t.co/j050qAWxwl">pic.twitter.com/j050qAWxwl</a> —@JenD1974

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> to give lip service to Democratic values, while working to protect the interests of her donors. <a href="https://t.co/TOvx4gXa0v">pic.twitter.com/TOvx4gXa0v</a> —@funkinatrix

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> she gets to call others unqualified but is outraged when others do the same to her. <a href="https://t.co/BQC26ZnY2x">pic.twitter.com/BQC26ZnY2x</a> —@samhwils

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> that it takes her just a little longer than others to "make the right choice." <a href="https://t.co/FxxOyMR1N1">pic.twitter.com/FxxOyMR1N1</a> —@Latinos4Bernie

<a href="https://twitter.com/hashtag/HillarySoQualified?src=hash">#HillarySoQualified</a> That Colleges Can't Afford to Pay Her to Speak, Only Wall Street Can <a href="https://t.co/Wt7QP8qiFO">https://t.co/Wt7QP8qiFO</a> <a href="https://twitter.com/hashtag/p2?src=hash">#p2</a> <a href="https://t.co/DKVXdNfSsQ">pic.twitter.com/DKVXdNfSsQ</a> —@Socialist_Times

It makes you wonder if coming up with hashtags really helps your candidate