Fans meeting celebrities they love (for whatever reason) can be one of the best experiences of their life or one of the worst, possibly shattering the illusion they had of them and ruining their life forever. However, if someone happens to be a fan of Bill Murray they can get either of the two polar opposite experiences at any given moment. So, either he'll crash your party for some karaoke or he'll throw your phone off a roof if he catches you taking photos of him. Reddit users have already revealed the most ridiculous things they’ve seen at a party (clearly these aren't the people who search for a house pet to befriend at parties) in addition to revealing the most NSFW things they've witnessed publicly. This Reddit thread tells the tales of fans' saddest celebrity encounters.

Betty White, best known for certified classic The Golden Girls, hasn't always been as cool and popular as she is today. Here's one user's story about a struggling White at a book signing being ignored by mall-goers:

"Betty White. It was right after the Golden Girls (and Golden Palace) had ended. Her career was not in the best place at the time. I was at the Beverly Center in Los Angeles and saw a poster promoting Betty White signing her latest book about how much she loves animals. I liked the Golden Girls so I thought I would swing by the bookstore to take a gander at Betty White. It was so sad. I'll always remember she was sitting alone at a big table with a stack of books in front of her. People were in the bookstore shopping but no one was buying her book or really acknowledging her. She just sat there, pen in hand, waiting. She would occasionally wipe off some imaginary dust to look busy. I'm getting the chills just remembering it. Of course, I was such a self-involved college kid that I just stared at her from far away. I should have just gone up and talked to her."

There's this story of The Matrix star Laurence Fishburne being called fat while spotted grocery shopping. 

"After Katrina, my now-wife and her then-boyfriend were in Whole Foods in New Orleans, shopping. There was a guy there who looked like Laurence Fishburne, and the boyfriend turns my wife and says, loudly, 'Damn! Laurence Fishburne got fat!' The man turns around slowly and just stands there, looking at them, forlorn. It was Laurence Fishburne."

He got that Matrix money already. Let the man live. 

You'll stop complaining about The Winds of Winter when you read this story about poor George R.R. Martin: 

"I met George R. R. Martin at the Blaze Pizza in Evanston a couple of months back when he was in town to accept an award from Northwestern University. At the time, I was listening to the audiobook of A Clash of Kings, and he very excitedly told me, 'You've got a ways to go to catch up!' When I told him that I've already read what he's published three times, and am listening to the audiobook as a new way to experience the story, he just kind of...deflated. He let out a big sigh, and just said, 'Yeah, I need to finish the next book. People won't stop bothering me about it.'"

And here's a sad, but funny, story about a Reddit user's encounter with Rachel Weisz:

"I sat next to Rachel Weisz on a flight to Malta. I was 14 or 15 years old and had absolutely fallen in love with her in The Mummy movies. She was my first girl crush and I wanted to be just like her.

She was very warm and friendly at the beginning of the flight so I thought 'Don't screw this up by acting like another fawning fangirl.' I never let on that I knew who she was and just chatted happily with her as the conversation dwindled and she became more sullen and withdrawn. Finally she snapped at me about something (I can't even remember what I said or what she said in response, but it was clearly in a irritated tone) and I immediately sat back and went silent.

Her little son and his nanny were sitting across the aisle from me and I guess the nanny had been eavesdropping. A couple minutes after Weisz snapped at me, she got up to use the restroom and her nanny leaned over and said simply and quietly 'She gets upset if you don't acknowledge who she is.'

I tried to continue talking to the nanny but she turned back to the little boy and acted like she had never said anything at all."

For more sad stories, head over to the thread here.