Yes, some universities have a tradition of including a “snake fight” portion in thesis defenses, where students fight one of the university’s snakes. The quality of the student’s thesis determines the size of the snake they must fight, with better theses resulting in smaller snakes. After the committee reads the thesis, they tell the snake master how good it is, who then chooses the snake. In some northern European countries, an external examiner called the “opponent” fights the snake on the student’s behalf, with the opponent’s skill level based on the thesis’s quality.
I have seen this posted here about 87 times, but in case you have not seen it: