The tweet also included a photo that suggested the president, 93, was relying on a catheter.
O'Donovan's charges carry a sentence of up to 20 years in prison, according to The Washington Post.
An American woman charged with subversion in Zimbabwe for allegedly insulting the president will remain in police custody this weekend after appearing in court for the first time.
A lawyer for 25-year-old Martha O'Donovan, Rose Hanzi, told the court that the subversion charge was illegal because police did not inform O'Donovan of it when she was taken from her home in the capital, Harare, on Friday morning. He added that his client had formally been charged with insulting the president.
O'Donovan works for Harare-based Magamba TV, which describes itself as a leading producer of cutting edge political satire and comedy.
Earlier reports said Ms O'Donovan was accused of allegedly referring to Mr Mugabe as a "Goblin" whose wife and step-sons had imported a Rolls Royce, an apparent reference to President even though he was not named.
O'Donovan, an alum of NYU's Gallatin School of Individualized Study, has been in Zimbabwe for a year working as a project officer for satirical outlet Magamba TV and a bartender at local watering hole, Mars Bar.
Mugabe, 93, has been increasingly uneasy about social media activists after a pastor started the #ThisFlag movement past year to organize stay-at-home demonstrations against the government.
The US embassy in Harare confirmed O'Donovan's arrest and said it was monitoring the situation closely.
Social media posts played a major role in fueling major anti-government protests in Zimbabwe previous year. A judge sent her to prison, but said she could appeal for bail in Zimbabwe's highest court.
Zimbabwe Lawyers for Human Rights says it has represented almost 200 people charged for allegedly insulting Mugabe, the world's oldest head of state, in recent years.
Mr Puigdemont travelled to Belgium at the weekend with other members of the dismissed Catalan administration and hired a lawyer. All of them refused to respond to questioning with the exception of former minister Villa, who spoke for about 40 minutes.
If T-Mobile and Sprint had aligned, they would collectively rise to the number three provider slot in the USA mobile market. This isn't the first time Sprint has tried to acquire T-Mobile, and it may not be the last.
These are just a few and widely varying, examples of where the bitcoin's value could head to in the next decade. CME Group's introduction of bitcoin future contracts could bring more institutional investors into the arena.
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Bilic has been under pressure at West Ham for some time and the boss concedes talks with the chairman have been scheduled. It was simply woeful defending and summed up yet another miserable night for West Ham at the London Stadium.
The insider revealed how Justin pursued Selena while she was still with The Weeknd , but added: " Selena had to be won over". They were also seen getting breakfast together, and on Tuesday, laughing as they rode bikes.
The two companies are already among the top ten providers of chips ranked by revenue in an industry that's consolidating rapidly. Qualcomm has a market cap of around $92 billion as of writing while Broadcom is worth almost $113 billion.
He is the first minister to step down from Theresa May's government in the growing scandal about sexual harassment at Westminster. However, the Prime Minister expresses faith in Mr Williamson and in the maintaining of the whips office in his absence.
Each general counsel also struggled to name an executive at their company who is specifically tasked with overseeing the threat. Experts have said that the Russians' goals included promoting discord in the USA and inciting violence.
Those close to Gomez believe that the actress may get back together with Bieber, who she dated on and off from 2011-2014. Selena Gomez and The Weeknd's relationship may be over, but that doesn't mean the split was a mutual agreement.
Saudis 'intercept missile near capital'
State news channel Al-Ekhbariya said the missile was "of limited size" and no damage was caused. Saudi military forces have intercepted missiles fired from Yemen several times in the past.
Bergdahl gets no prison time
Bergdahl's defense lawyers twice tried to have the case dismissed over campaign trail comments from President Trump. In court, Bergdahl showed remorse by crying, and he apologized to those who had risked their lives for him.
Ultimate edition marks the end for Aston's Vanquish
Inside, the Ultimate Black theme gets Obsidian Black leather with Chestnut Tan accents, and a carbon-fibre twill fascia trim. THEY call it the Ultimate and, at prices up to £223,995, this is undoubtedly the ultimate run-out special edition.