Not turning off the lights anywhere in your house at night.
I saw once a movie or a show where the dad was presented as strict for constantly telling the kids to turn off the lights when they leave a room.
Well, I've recently been on a vacation with 2 couple (all of them Americans) and *the lights were never turned off anywhere.
I was literally the only one who turned them off in the hallway when we were all in the living room, or turning them off after finishing in the bathroom.
It drove me nuts.
I saw once a movie or a show where the dad was presented as strict for constantly telling the kids to turn off the lights when they leave a room.
Well, I've recently been on a vacation with 2 couple (all of them Americans) and *the lights were never turned off anywhere.
I was literally the only one who turned them off in the hallway when we were all in the living room, or turning them off after finishing in the bathroom.
It drove me nuts.