I Swear

Several times when I've changed Ike's diaper in the middle of the night in the dark I see a little spark or flash of light when I'm pulling the diaper away. Am I crazy. That's a rhetorical question. Now I am half asleep, but it's happened at least 5 or 6 times. Ryan will say it's out fire alarm that does flash every so often but it's not that, I know the difference. It's right at his bum and it's just a small flash. I have no scientific theories for this except maybe static electricity. Has anyone else experienced this, or do I need a phsyc exam.