In one of the womens barracks, there was only one mattress for 40 women, and each one got a turn. One night, it was the turn of an 18 year old, and an elderly woman asked if she could have her turn, because she really could not stand another night sleeping on a plank of wood.
She gave up her night, and that night, the guards came in drunk and shot up the mattress.
That’s the short version ( The long version is in one of the maggid books)