Last night I was brought back far away to early years in university dorms or school summer camps... That's the "dark" talk where you need several girls getting to sleep in one room, and the best time to talk is just after the lights are switched off. Of course, we talk also before, but in dark it is special. At first I actively participate, then I only listen, and then I somewhere lose the track. That's a very good way to get to sleep. from time to time.