It is entirely possible to start a fire in your microwave.
1. pop a bag of popcorn for breakfast.
2. do something else while it is popping.
3. return and stare at the horrific amount of smoke pouring out of the microwave.
4. open windows and turn on the fans.
The saddest part is, that was the last bag of popcorn, and I am still really craving popped goodness :(