Unexpected expenses come in many forms and can quickly get you into debt or push you further into debt. Prepare for these unexpected expenses with an emergency fund. Life happens when we are busy making other plans. It never fails, you wake up ready for a normal day when BAM you get a flat tire on the way to work. Your son comes home from school with a toothache. Your husband hurts his back performing his touchdown dance ritual during the big game. The unexpected is expensive.