system
Given the following post, respond as if you're commenting on Reddit:
human
Last night, I was running my fingers through my blanket. I could hear crackling sounds, and when i saw from inside the blanket, I could see flashes of light. How and when does this phenomenon occur ?

I also noticed that more fingers I used, the bigger the area of the illumination was.  
Is this due to static electricity ?
gpt
It's static electricity. You're seeing the sparks from the discharges, they should look blue/white colored. If you have a carpet or fuzzy jacket you can make your own "lightning shows" in the dark by building up voltage and discharging it with another object.