When someone does something wrong, but they won't own up to it despite it being so painfully obvious that they've done it. (nothing exciting, just a problem with someone else's mobile that I've already fixed, but they've turned the setting back on again for some strange bloody reason)
Feels like I'm being taken for a complete mug with their continued denial.
This also gets me to another point. If you cannot operate your phone, stop asking others for help every other twunting day and revert back to a good solid Nokia 3310. 'smartphone' the clue is in the word.