Walking on beach with husband, catching up on our respective days, late afternoon:
Him: …and we had FOUR hours of this lecture on motion and inertia. It was actually really interesting once you understood the forces of (insert physics gobbledegook)…and stuff.
Me: I spent most of the day learning why old people fall over.
Him: Which is essentially what my lecture was about!
(Cue detailed explanation of the physics of old people falling.)