An MA student at UCSB, Christopher Todd Brown, wrote his thesis and got it approved. After the committee approved it, he added a "Dis-acknowledgements" section which started like this:
"I would like to offer special F**k You's to the following degenerates for of being an ever-present hindrance during my graduate career...."
Only there weren't any ** in there and it continued to rail at some length against various bureaucrats, politicians and institutions with which Chris had beef.
Unsurprisingly, the university refused to accept the thesis in that form, requiring him to drop the ex post additions he'd made.
Somewhat surprisingly, Chris chose to sue instead. And then to appeal when he lost.
And thanks to the internet and Paul Gowder, we get to read about it!
I actually think the student is right. They shouldn't stop you from getting your degree because you let off a little steam in the acknowledgements. My only issue with Chris T. Brown is that he didn't have the onions to let his committee see his handiwork ex-ante, and just tried to weasel it in ex-post.