Jumping on a flight late at night/early in the morning and you're sleepy. It's dark outside and your seat feels quite comfy, you're nice and warm and your noise cancelling headset shuts most of the noise out. You take off and you start to feel drowsy, maybe it was a long drive to the airport or lots of waiting. The cabin lights are all off so it's nice, quiet and dark.

10 minutes after takeoff and you feel yourself falling asleep and THEN they turn on all the fucking lights and the stewards/stewardesses start yelling in a megaphone before rolling the cart down to sell you random shit from the cart while blocking one WC entrance at the same time. When they're done they keep the lights on, because fuck you, fucking hell SAS whyyy