Taking a blanket and making a small fold along the end to create a little pocket or finger tunnel, holding the blanket in place with your middle finger and thumb, you insert your index finger into the finger tunnel and go in and out, a technique used to relax while watching cartoons.
Some also refer to the act of rolling the nap of the blanket into small balls but not me.
For fucks sake, I spent over 200 dollars genshin impact just to lose the 50/50 on Zhonglis banner and get JEAN. I'm never spending any more money on this.