I read a story about an unfortunate fellow who went out on the town and had a few too many. He (fortunately) got home safely and (unfortunately) fell asleep in his contacts.
The next morning, not only was he hung over, but he had contacts stuck in his eyes and he could still feel the previous night's smoky atmosphere in his suffering corneas.
Even though UltraFlex 55 are okay to sleep in, it probably wouldn't be a good idea if you' been drinking.

Does anyone else have any more horror stories to tell?