Don't know if this really qualifies, but it sure as hell pissed me off - and it's something I'll never forget.

My sister was a cunt all through my childhood, 3 years older and just an extreme cunt. Always stealing my stuff, getting me in trouble - and when I tried to do ANYTHING to get back at her, my parents backed her 100%, getting me in even more trouble.

She was the worst until I was about 16 - where she mellowed out a lot. Mostly because I had given up at this point, she won - hands down. There was nothing I could do to get back at her - like this one time I caught her smoking on the side of the house, alerted my parents to it (I saw through my bedroom window without her noticing me noticing) and they caught her red handed. She got grounded for less than a day, I got grounded for a week. Cunt.

Anyway, after things were kind of cool for a couple years - on my 18th birthday she said she was going to do me a solid and buy my booze for me; which was great because I had to buy this one guy a case of beer every time he bought us any booze.

I thought about it at first thinking... she might screw me over. But nah, who would screw over their younger sibling on their 18th birthday? HER - THAT'S WHO.

Of course she played it up acting like she was going to go through with it until 10pm the night of, then just stopped taking my calls, kept my money - and worse, told my parents I tried to get her to buy booze for me. That fucking cunt.

Next day she told me this shit like "I was worried you might drink and drive - what if I killed you?" - trying to act all high and mighty, super self-righteous cunt.

Seriously, that was the straw that broke the camel's back. I could forgive a lot of shit - but that one... fuck her - forever. It's been 10 years now, I still wouldn't piss on her to put her out if she was running around screaming on fire.