I've rarely (Like, less than four times in sixty years of life), ever had anyone 'Confront' me like this, while in public. MY tolerance for that kind of 'FAFO' behavior is exactly: zero, and giving the offender BOTH 'Birds' would be the least of what I administer (Or will).

I've lived this life with the mandate of 'Respect is EARNED, not DEMANDED,' and if anyone starts off an engagement with me from the stance of ignorance/arrogance/threats, they're already doomed. If they're stupid enough to escalate it into vandalism/theft/assault, then I hope they've gotten all their material things in their life in order, because I'm not taking any prisoners at that point.

Like many, the older I get, the less patience I have towards stupidity, and by now it isn't even measurable (My patience I mean).

Far too many fools infest this world, and sadly, they were never set on their asses as very young children, on the schoolyard/parks (Which is where most of us learn proper social manners, and what'll happen if we fail to use them!), so now they've become emboldened and as 'Adults,' believe they can waddle/strut/gesticulate their opinions/feelings against anyone/everyone they see as an easy target.

We get precisely the kind of society, govt. and nation we tolerate and enable.

It's long past the time we stop tolerating/enabling such Fools.

You were not in the wrong. YOU were legally parked, and this as*hole choose to confront and then threaten you (By calling armed govt. mobsters, putting YOUR health/life in direct jeopardy).

I would be filing as many official complaints against that Jiffy Lube facility, via their Corporate handle, THEN your local law enfarcement (To report what happened, since the employee took YOUR license plate/picture). DEMAND they take the report in case future aggression happens.

While none of this will do a damned thing in educating or stopping said Fool(s) from causing you/others trouble down the road?

IF they do, at least YOU will have your paper work trail in order (An established History of their harassment/threats/reprehensible behavior).

You left, and thus ended the engagement before anything/anyone was hurt. That's not a bad thing.

Don't beat yerself up over this. Yes, we all have our bad days when our tempers run short, but you weren't the one who choose to light that fuse.

((( Hugs, if o.k.? )))

It was rude from him to approach you that way, period.

The only situation where I could imagine it being remotely maybe acceptable if you were driving past a number of obviously placed private / no trespassing signs to get there (which there weren't any).

It is a damn parking place like any other otherwise, maybe it isn't even legally theirs, just decided to appropriate that corner of the plot to themselves.

If you had knowledge on relevant possible laws (if there might be any?), in this situation letting them pull the "call the cops" card might have even been an appropriate move to let them navigate themselves into an embarrassing mess about it (that is, if there is no law preventing you parking there).

Even if it was actually theirs, given how poorly (or not at all) was that fact signed, they have no right to be like that about anyone parking there. A polite request to please move is appropriate, what they did is not.

Of course your sanity first :) - just saying that in my opinion you weren't in the wrong! They were.

It's not your fault that they didn't have any signs up, and being that petty to want to call the cops was just ridiculous on their end.

It is nor what one says, it's how it is said. If he had been polite about it from the start, enough said. No harm, no foul. But if someone is an ass about it, they make matters worse.

Was he in an employee uniform or security? Because if not then he's just some crazy guy

It happens.

Honestly if there were no signs and it was part of that areas parking, he was being a jerk. Cops wouldn't have done squat to you. A parking area has to be labeled for that store for any action to be taken.