My late wife was exactly like this when she was younger. When she was in the mood to get her kink on, she would get her parents to look after the kids and if they came to our house to mind the kids, she would appear in a conservative dress and her normal knee length boots. When she appeared like this and had a big handbag, I knew she wanted to get smashed and fuck strangers all night. We would walk to the corner, she would pull the dress off, revealing her tiny stretch mini skirt and lurex boob tube stretched over her tiny boobs and huge nipples. She would pull her bottle of vodka out of her bag and hide the stuff in the garden. We would walk around the block and hail a cab.