There is also the wedding scene of Bernard and Lydia in the 1997 movie Four weddings and a funeral. https://m.youtube.com/watch?v=ZYzQFudZ70k

Is it… a game about a game about a game ?

My precious bodily fluids ! https://m.youtube.com/watch?v=xQyf3QgRP-c

I know I shouldn’t do it here, but let me ask a serious question : does the square in O(n!²) really matter ? I have a confused intuition that the factorial grows so much faster than the square that it kind of disapears assymptoticaly.