The taste of teeth-bleaching strips. *gag*
Having to buy ONE more piece of tile for the bathroom and then finding out that the tile is discontinued.
Having to buy 7 extra pieces just in case something crazy happens.
Crooked bathroom walls. Putting a vanity in becomes a hassle.
Excel 12 Beta. Don't tell me to use the Tools menu when you know damn good and well it's not there anymore.
Getting phone calls from people I don't know. On my cellphone. That's just obnoxious.