I’m rude to debt collectors who call me trying to collect debts from people who happen to once have had the same phone number as I once did. Like, I’m not who you’re trying to collect from, fuck off.
I’m also rude to generally any scam caller, they’re some of the few people I take great pleasure in telling off because I can get away with it. They’re scammy assholes, what’re they gonna do? Cry to the authorities? Knowing that they’re pieces of shit who scam people out of money? Good fucking luck.
I used to make sport of proselytizers, seeing how long I could string them along, but these days if someone hops my 12 foot fuck-off privacy fence and walks the 100 yards down my driveway past the no trespassing signs I will likely have already called the cops by the time they reach my door. So they would be met with hostility.