Have you ever met a complete headcase?

You "shook him off" ? That was nice of you. I hope you moisturized your hands first

I knew a guy in work who lied incessantly. Different, conflicting lies to different people. When he left the job we presented him with a list of all his lies.

The look on his face was priceless.

Headcases.... I've known a few, mostly members of my own family, me included.

Met them??...fecking work with most of them.

I work in a prison so the answer has to be yes. Loads of them !!

They used to keep these guys in asylums or mental hospitals.

That became 'Care In The Community'

Now it's jail 😕

I hung out with a guy in Feile 92 , who was a little short on cash but good craic to be around. He went wandering one night and when I found him I spotted him picking up someone's discarded snack box chicken bones literally from the wet from piss and booze gutter outside the chipper and stripped them clean . I kinda stopped hanging out after that. I should have seen the signs when he substituted milk with scrumpy in his corn flakes that morning.

A fairly innocuous one, but I was taking photographs for a college project in Stephen's Green back in the early 90's when this woman with a dog approached me. She strongly insisted that I take photos of her dog. This was before digital cameras; I had just finished a roll of film, and didn't want to waste another one on this, so I had to pretend to be taking all these photos of the dog. She got him to do various "tricks", which mainly consisted of him not doing what he was told and just running about. She very proudly told me the dog had chosen to be a vegetarian. She then told me to be sure to send her on the photos, before heading off without giving me any contact details.

Regarding the example given in the OP, my mother had a cousin in England who was a "white witch". She managed to get into Newgrange for the winter solstice in the 90s. She was very, very excited about it. But to be honest, I wouldn't call her a complete headcase for that alone.

I also know someone elderly with Paranoid Schizophrenia (an actual medical diagnosis, before Jequ0n starts at me) who refuses to take their meds, so total lunacy is always only a phone call, house visit or Garda contact away. Far too numerous to mention, and not fun thinking about it, so I won't.