I heard of one that I thought was quite amusing: 'Ken Dodd's Dad's Dog's Dead'. Leaving aside the age that KD's dad would obviously be if he were still alive now; never mind his dog!
The problem is that often very witty original ideas spread, and then become so tedious and hackeneyed with their overuse - even worse when people proclaim them as if they genuinely believe them to still be hilariously original.
Every time a team sidles up and proudly announces that they are 'Universally Challenged', 'Quizlings' or 'No-Eyed Deer', 'Norfolk enchants/in chance/and chance', 'The Team With No Name', 'Can't Come up With A Good Name', 'Him & Him & Her' or similar, you can guarantee that the quizmaster is internally rolling their eyes and cringeing for them.
We went to one a few years ago where there was a team called 'No-Eyed Deer' and another team called 'No Idea' - so not technically the same name and so the QM couldn't really ask one team to change it.
However, it got more and more embarrassing for everybody as the evening progressed, with the QM having to keep unnaturally stressing the names in weird places to distinguish: "No I-dee-errrrr" and "No I-dee-arrrrr".
So if anybody tells you a genuinely brilliant one here, that has genuinely hardly ever been heard before, a load of people are going to see it, then use it themselves, then collectively send it on a short journey to Overused Clicheville!