When you have a day expected to be 24 hours in length or more without sleeping. Named after the Touhou game where you freeze the night just to find that one person who put up a fake moon.
My day began at 7AM, with me flying out of Toronto for Dublin at 5PM. It was 6AM the next day when I arrived, and I didn't fly to Glasgow until 1PM. I didn't get to the hotel until 7PM. That was one heck of an Imperishable Night.
The act of standing for a whole night, usually as a punishment for having one-night stands with your partner without letting your parents know.
Guy 1: "Yoo parents suckssssss....."
Guy 2: "What's wrong, dude?"
Guy 1: "My parents made me do a one-night stand in front of them for having a one-night stand earlier with my girl without letting 'em know."
Guy 1: "Oof, that's sad."
Guy 2: "VERYYY!!"
Hot girl: (to Guy 2) "Heya there, hottie! That one-night stand with you was amazing <3"
Parents of Guy 2: *overhears what the girl said* (to Guy 2) "Oh yeah! Last night, we had a great time watching you do a one-night stand too!"
Guy 2: *passes out*