- Should anyone be called infront of the head of their college, they have to wear a gown (even if its over normal clothes) to show respect to the person who is about to get very pissed off with them.
- We are not allowed to walk on the grass in courtyards, you have to walk around on the pavings. Only Fellows (lecturers) may walk on the grass.
- Going for a formal dinner (rather than just a cafeteria tray meal) requires a suit and gown to be put on (if you're male, smart skirt/dress and gown if female).
- All college security people have to call students Sir or Madam, and only be male, and wear bowler hats.
- Bedders (only allowed to be female and by the looks of it older than 40) come into your room late morning every weekday to tidy up a bit, empty your bin and once a week change the bed. If you don't want them to come in, you leave your bin outside your door. (We have college accomodation every year, we never go into private housing).
- Exams are called Tripos Exams "from the word for the three-legged stool used by the `Ould Bachilour' of the University who conducted the university examinations in medieval times." and anyone who gets a 1st in 3rd year is a "Wrangler" (with the top person being "Head Wrangler". Name a famous English mathematician since about 1500 and more often than not, he was a Top Wrangler).
- Up until some time in the 60s if a student left college grounds (to walk into town or to another college) he or she had to put on their gown, which made it very obvious to the people who lived in the city who the students were. Thankfully they've repeelled that rule now!
There are literally dozens more but become more and more specific to colleges and subjects.
- There's a story that Lord Byron kept a bear in his room when he was in university. Since he was admitted as a Nobleman, he could bend more rules. Wether its true or not I'm not quite sure.
- Students used to have to attend 5am Mass on certain days of the week back before 1900. When Maxwell (of Electromagnetism fame) was told this, his reply was "5am? I guess I can stay up that late".
I imagine the only other university with more traditions or crazy throwbacks to ye-olden-days is Oxford, since in 2009, Cambridge will celebrate its 800th birthday! Up until the late 60's only 2 colleges out of about 25 let in women!