Students at a university in South Africa gave up on writing an exam - and started protesting that it was too difficult, local media reports say.
The incident happened during a philosophy exam at the University of Limpopo in the remote northern part of South Africa.
Videos have been posted on social media about the protest, with at least one student seen walking on a desk:
Sun City stories
Watch University of Limpopo students . pic.twitter.com/ZQcWGTwi0K— Live A Little (@BornToLeadSA) August 28, 2018
A student who asked not to be named told Sowetan Live that they were expecting a mix of difficult and easy questions, and were shocked that the exam was far more difficult than they had expected.
She said: "To show that this test was unfair, the entire class walked out. Even those who are geniuses left."
Another student said: "The lecturer himself does not understand philosophy. So how can he teach it to us? The test was not what we expected. It was set up to be difficult."
Have your say
More World Headlines
- Jamal Khashoggi: CIA 'blames Saudi prince for murder'
- Cape Town pours alcohol down the drain
- At least 42 killed in Zimbabwe bus fire
- Symbolic funeral services for murdered Jamal Khashoggi
- US to cut Africom troops amid focus on Russia and China
- Trump ordered to restore CNN reporter Jim Acosta's access
- Trump attacks Mueller's Russia inquiry as 'absolutely nuts'
- Carmakers lure ride-hailer, delivery drivers in Africa
- White House aide Mira Ricardel removed after Melania Trump row
- Nigeria: Biafra secessionist leader 'must appear in court'
- Lion Air crash: Victim's fiancée takes wedding photos alone
- UK closer to delivering Brexit - May
- UN lifts nine-year Eritrea sanctions
- South Africa minister resigns weeks after sex video scandal
- Brexit: Theresa May to face cabinet showdown over deal