I worked in a bar once, and a customer who liked to lord about and the other barmaids fawned over, didn't impress me at all. He was loud and brash and would announce "bottle of champagne" thinking it made him look affluent...he'd only do this if he had an audience. I avoided him in general.
I learned from the other girls he would ask personal questions about me. He found out my address and did searches on my property. At the time I had an X6 car, nice but several years old, and I'd saved hard to buy it.
He came bursting in one day, waving paperwork that I never did get to see, shouting "look she doesn't even own her own car, it's on finance!!"
I was bemused, told him, I did own my car and that even if I had used finance, there was no shame in that, so I didn't see what his point was. He got livid at this and started ranting. I told him that it was not normal to obsess over a stranger's finances and to sit down, or leave and he plonked himself down in a corner, furious.
He got progressively more drunk and later, a random man made a comment to him about "had a bad day mate?" so he took a massive swing at random man. Random man ducked, punched him, split his lip and he fell over and knocked himself out on a barstool on the way down.
He came round and sat like a sheepish little boy, I was sickly nice to him, offered him an ice pack for his lip, and he couldn't say a thing, although you could see he was furious that other people were looking at me like I was a much bigger person for helping him. Inside I was dying of laughter. He knew that.
He never came back.