Nothing quite matches the schadenfreude of watching your physics professor—who smugly assigned impossible pendulum problems—suddenly freeze up while trying to solve their own homework in front of everyone. That moment when they stare blankly at the board, marker in hand, muttering about "a simple application of Newton's laws" while frantically erasing their third failed attempt? Pure. Gold.
The tables have turned, and suddenly those "straightforward" classical mechanics problems aren't so straightforward anymore. The collective student mind thinks: "Not so easy when you don't have the answer key, is it, Professor?"