Even stupider security
I was called to jury duty, so I had to go to the courthouse, where of course you're screened because everyone showing up for their civic duty is a member of the Taliban.
For some reason, the guard took offense at my keys. 6 keys, on a 1" ring, clipped to a small double-ended clip that then clipped to my belt. I have no clue how that could be a weapon dangerous enough to bring down a federal courthouse building.
Anyway, she instructed me to take it back to my car, and LOCK MY KEYS IN MY CAR.
Seriously. Not kidding. I matched her complete irrationality by calmly saying my vehicle didn't have doors and I couldn't do that. She stared at me for about 30 seconds, got a pissed off look and waved an officer to come get me.
The officer escorted me out of the building with my extremely deadly weapon.
Of course I went home and called the court clerk, who - after hearing the story - did a facepalm you could hear over the phone, and consequently released me from jury duty.