How to check if an outlet is unplugged

I’ll teach you how to use it in the morning when you’re worried about whether you took out the hair straightener or not

After you finish curling your hair, take out the outlet, and hit your forehead hard

When I go out, I don’t know if I take out the hair straightener or not

For your information, you can also use it when you’re confused whether you turned off the gas stove or not

If you hit me on the forehead after turning off the gas stove, I don’t get nervous