blanket show
means your going the bed or going to sleep.
that the back of your blanket is all the t.v your going to see for the rest of the night.
mother: "your going to the blanket show"
child: "i want to stay up mum"
mother: "no, it's time for you to go to bed!"
child: "aaawwwwwww!!!!"
mother: "lights out"