The act of going to a persons home supposedly for a sexual fling but instead pretending to fall asleep only to awake in the middle of the night to eat the contents of the cupboards and fridge before fleeing.
When you enjoy the one night stand so much, you have a two night stand. The two night stand was amazing, so you go back for a third night stand. You forget your shirt at her place, so you go for a fourth night stand. A fourth night stand is the act of hooking up with the same partner for a fourth time, even though the intention was to do it only once.
Brad: Bro, I had a one night stand with Kiara, and it was so fucking good I went back for seconds. But after that, I really wanted thirds, so I went back there. Before I left, I "forgot my shirt", and now I am going back for fourths, a four night stand.