I actually broke down and told to a 'Karen' to Shut the Fuck up yesterday. ...I literally came out and said it.
She was berating a new hire at the counter, asking for her receipt as she was holding it in her hand and staring at it. I watched go on for about a minute, and then just broke...I wasn't having it.
She accused me of swearing, then I reminded her of the 1st Amendment. Then she came back with me not going to heaven or being godly...even though I was baptized about a two minutes walk from there. I'm pretty sure Jesus would care more about how you treat someone, over a swear word.
...I never thought I'd have that moment, but it happened.
Wait were you an employee or another customer? And the the religious bit is just.. too much