I used to use "first world problems," then I kind of thought about it and realised how a lot of the things I had problems with were probably also issues in many parts of the world not just Canada. Since then for days when my MP3 player is not working, and I have a headache and I don't want to go to work and I'm out of milk and everything is annoying at once I use "petty whinging" which seems to better suit.