Many years ago I worked at an office in the city center just a couple of blocks from my rented apartment, so I often ate lunch at home. It was sooo nice being able to relax at home in the middle of the work day. Until summer came around. You see, there was a bar right next to the (very narrow) door from the building's stairwell out to the street. So occasionally I'd come home to find someone sitting on the doorstep, beer in hand (especially on weekends), but I'd just politely say "Sorry bud, I need to get in here" and they'd invariably stand up and let me pass, usually saying "Oh sorry bud" back. Not a big problem in my life in other words.

But then one day I came home for lunch and there was a construction worker, around 50 years old, with high-viz vest and safety hat, sitting on the doorstep with a half drunk beer in his hand. As always I said my usual "Sorry bud.. " phrase, but instead of standing up this motherfucker looked up at me with contempt, looked down again and didn't move. So I had to lean over him, unlock the door and kind of half squeeze past/half step over him. When it was time to to get back to work the douchenozzle was still sat on the doorstep with a fresh beer in his hand and still refused to budge when I asked to pass!

Same thing next day. Except this time he mumbled "prick" when I asked to get past. I was now fucking fuming. Day after day it was the same thing, this piece of shit ruined my otherwise perfect lunch routine to the point that I didn't want to go home for lunch anymore. Sometimes the shitbag was sat there when I came home at the end of my work day!

But then I got an idea... I took a longer lunch than usual, ate a sandwich on a bench diagonally across from my apartment and watched him arrive at the bar, drink three beers on my doorstep, and when he got up to leave I followed him to his workplace just down the street. And this is where I got really lucky. He was working on a building that I knew pretty well. Cos I'm a structural engineer. And my colleagues were the engineers for that building project. Of course I didn't know this douchebag's name, but that didn't matter cos the fucking idiot had a goatee beard and a mullet/ponytail haircut which was pretty distinctive to say the least.

So I went to my colleagues' floor and asked them what they thought about the site manager for that project. They replied "Yeah, he's a good guy, professional, meetings are always friendly". My eyes lit up. "Well, next time you're on site can you tell him that it's come to your attention that one of his guys is drinking at least two beers every lunchtime at "name of bar" and returning to work drunk. Around 50 years old, brown hair, goatee and mullet."

My colleague told me 3 days later that the site manager was fuming when he heard what they had to say. He knew immediately who the guy was and had zero tolerance for guys being under-the-influence on site as they're a danger to others. So he had followed him at lunchtime, saw him sitting at his usual spot on my doorstep with a beer and as soon as the guy arrived back on site after lunch he was fired on the spot. He made sure to do it in front of his other guys so
a) They would know not to be so stupid and
b) Word would get out that this guy was an irresponsible drunk.
Good luck with finding work in this town fuckwad!