What’s the meanest/rudest way someone had rejected you?

I've told this story before. Apologies for the copy-and-paste.

I decided once that I liked a friend-of-a-friend. We met at a party, spent the evening chatting. I couldn't tell if she liked me or not, but I figured at the time that as long as I wasn't pushy, I could keep pursuing her until I got some kind of hard no. At said party, she kept mock-arguing with a female friend of hers. The two of them kept saying, jokingly, "We're not a lesbian couple. Honest!" in reference to the fact that they kept at it like an old married couple. This will be important eventually, so remember it. Anyhoo, like a week later she posts on Facebook, "It's national Hug (her ethnicity) Day!". So I shot her a PM and said, "I've got a hug for you, but it's a very old hug that's been in my family for generations. I'll have to give it to you in person." Cringe? Who knows. The friend I related it to after the fact thought it was clever and funny. YMMV. Either way, she didn't respond, so I said to myself, "self? That's a sign. She doesn't like you, so you should leave her alone." So I unfriended her and went on with my life. About a week or two after that, all of us were at a big backyard barbecue. My crush was once-again griping at her friend, so as the two of them wandered past my particular group of conversationalizers, I quipped, "Are you sure you two aren't a lesbian couple?" The guy I was talking to raised his eyebrows at the non-sequitur and said, "huh?" My "crush" turned towards us and said - loudly enough for anyone in a fifteen-foot-radius to hear - "He's just mad because I wouldn't give him any play. I would never stoop that low! My standards are much higher than that!" Then, she stormed off. AFAIK, nobody heard her outburst, but I did find out later through my friend that she was confused as to why I'd unfriended her. You can't win, guys. Also, this "my standards are higher than that" out-weighed me by fifty pounds. Just sayin'.

And/or what’s the meanest or rudest way someone has reacted to you being not being mutually interested in them.

Oo, forgot this part. It's another good story.
So, I used to know this gal who eventually started dating my best friend. And lied to me about him hitting her, but that's beside the point. Anyway, we were at a party - for my birthday, no less - and she starts getting nosy with me about the other girls in the bar we were at. Kept asking me what my "type" was, and who I thought was the prettiest girl in the room, that sort of thing. I think I was still in my "Asian phase" so I quipped "They're all cute, but they're no Zhang Ziyi." I think I said this mainly to get her to shut up, because I'd asked her for a date like a year ago and she'd dodged the question, which I'd taken for a no.
So she gets all up in my business (She was Asian - and by "all up in my business" I mean she literally leaned in and started emphatically poking me in the chest as she spoke) and start ranting about how nobody ever paid her any attention in high school and how it was "people like me" who kept passing her over for, quote, "Hong Kong models". Now, before I carry on with this story, let me remind you that A) she was fucking hot, B), she was fucking my best friend, and C) she'd already turned "people like me" (IE, me) down when I'd asked her out, so this was pretty fucking ballsy of her. I fixed her with a look and said "redacted, I asked you out a year ago and you said no, so don't give me that shit."
The best part? She recoils, stares at me for a second, and then says, "You never asked me out!".
JFC. She's living in Germany now. Good effing riddance.