R
@kazitor one class in university, the professor had a lecture where he announced the results of the test (I don't remember why there was a lecture after the test, maybe that professor was giving another class or it was a partial test, whatever).
He first put up a slide with everyone's score, ranging roughly from 2 to 8 (on a scale from 0 to 20 where 20 is "perfect"), meaning everyone had failed (<10).
Then after leaving the class sigh and moan for a few seconds, he said "for [random fake reason I don't remember], I've decided to adjust a bit the scores" and he showed a second slide where the scores were basically the previous, time 2 or 2.5 (so basically most of the class passed, which was the norm).
We all nervously laughed at the "joke" and how the professor was kind to us but rumours were that he pulled a similar trick every year and no one, professor included, ever questioned whether, since this happened every year, the fault was with the professor rather than the students...