This is admittedly a very small thing, but my mother often gives me advice about my current appearance when I'm going out. Most common ones are whether or not I'm wearing makeup, the state of my hair, etc.
This would be fine, if not for the fact that 99% of the time, her chosen moment to give me this advice is as I announce I'm leaving. No matter how many times she's seen me as I was getting ready. And then of course I get frustrated because I'm either going to have her annoyed at me when I get back or I'm now going to be late, so I can't win.