Well I've got a million of 'em, although a good portion of my stories have to do with video games.
I've been through 7 PS3s. First one: YLoD. Second: YLoD. Third: YLoD, but I fixed it three times before I broke a ribbon clip. Forth through sixth: wasted over $100 trying to find one on eBay that just had YLoD so I could fix it; all were actually broken beyond repair but one I got a refund for because it was the wrong model.
I have 4 PSone memory cards that deformatted, and one that thinks it's a Japanese PocketStation.
My brothers overwrote my original save files on the first three Pokemon game I owned.
For over 5 years, I was unable to beat Diablo II because of unrelentingly bad loot drops.
My younger brother has a track record of beating me in fighting games while he has no visible health remaining.
Before I quit Destiny, I watched as my brothers, friends, and countless randoms obtained all of the most desirable drops in the game while I consistently got the worst possible rewards no matter how many times I tried.
Numerous online mutliplayer games have begun to regard my connection as the lowest priority, despite how good it may be. I quit playing Call of Duty because it has become virtually impossible for me to win a gunfight. Nearly every kill I score requires me to get the jump on my target. If I start shooting at an enemy a full second before they start shooting at me, they will win 95% of the time.
There's more, but let's switch topics.
One time, my younger siblings and I were invited to a party at Chuck E. Cheese's. They rode in the hostess' car while I went with my mom. Before we could get there, we got a flat tire. I spent the rest of the afternoon in a Goodyear while everyone else got to have fun.
Being born so close to Christmas, most of my relatives opted to only give me one present a year while I was growing up. I didn't notice this until I was about 9 or 10 when one year my younger brother got a buttload more Christmas presents than I did. It finally dawned on me that I was getting the shaft on both occasions.
I was up an entire night writing something in the past year, but when I laid down to take a break, I somehow managed to knock my bed frame against the plug that was powering my computer, and it came loose. I didn't save any of it.
I submitted a design for the academy t-shirt and hoodie back in high school, but when it came time to vote, it turned out that the school-wide network had to be rolled back the day after I submitted my design, and it was never even seen by the teachers.
I also submitted two of my best student projects to be included in a multimedia art fair, but they were lost by the people in charge. I know they weren't pulling my leg because they were of much higher quality than some of the other submissions on display.
Anyway, good times.