"Not enough disk space to complete operation"
When the operation I'm trying to complete is deleting files to free up space on my disk drive. Yes, I know it's occurring because Windows wants to put my deleted files in the recycle bin, but will it really incur that much overhead to instead prompt me with "Not enough disk space to save files in recycle bin. Would you like to permanently delete the files?" Did Microsoft really face that extreme a bit shortage?
Also, from a paper towel dispenser in a hospital restroom:
"In case of emergency, twist knob"
The dispenser was one of those grab-and-tug models, and if there was no paper for you to grab and tug on, you twisted the knob on the side to roll some out. But that hardly counts as an emergency does it? Maybe in a bar, but certainly not by hospital standards.