… you sit bolt upright in bed at 3a.m. (having been asleep for at least… an hour…) and realise you haven’t taken your lenses out.
Lie in bed for five minutes debating with self over sleeping-with-them-in-and-risking-blindness-from-evil-infections vs heaving-self-out-of-warm-soft-comfy-snuggly-cosy-luvely-duvet-wrapped-bed-to-remove-them.
Going Blind finally outranked Feeling Tired, so you stagger off to the bathroom.
Peer blearily in the mirror and poke a finger in your eye, none too carefully.
Maybe you took the lenses out after all.
Yep, that’d be them, there, sitting all neat and tidy in their case.