Lesson: Don't put batteries in the coin compartment!
Today I was waiting for Kevin to get his arm checked to be cleared for wrestling tomorrow, and I started looking through my purse to pass the time. I noticed today's reciepts were black. I thought, "These are heat sensitive. ....what the .....!" Then I quickly noticed that my purse was HOT. The bills were HOT! The reciepts were HOT!!
I remembered the batteries. I ran into the bathroom and dumped the coins and batteries in to the sink. The coins were HOT and stayed warm for 30 minutes afterward. It took quite a bit of strength to separate the melted-together batteries.

Remember the lesson: DON'T put batteries in the coin compartment! Unless you WANT your purse to burst into flames.