I was digging down, and i found a abandoned mine out of nowhere. I got really cocky, untill i got exploded by a creeper._. I lost all my diamonds, and they talked about it for hours. Bon of a mucking sitch.
I was on a server and i went outside my base to see a guy, so to make sure he was friendly, I gave him a porkchop. He tried to kill me and then i hid over a hill, so he wouldn't find me and my friend's HIDDEN UNPROTECTED (they had the redstone ore protection program) BASE that i stupidly dug into just 100 blocks from spawn. STUPID.
Getting tricked into going to spawn for some issues (being server mod and all), but litle did I know that they replace the platform with lava. Spent 10 minutes spawning and dying before realizing I could tp quick to another player. Insta ban.
I was playing on one of those pvp clan servers and a guy was at spawn recruiting people for his clan. Two guys in front of me asked him and he said ok and gave them iron armor and a diamond sword. I then asked to join and he told me to follow him. As soon as we got a few blocks outside spawn he turned around and hacked me to bits with his diamond sword. I was really mad so I stopped playing multiplayer for a while.
On this one multiplayer server, i was mining and an admin was using his powers to screw with me and making the ground disappear, but he helps me find diamond with his powers, and while we are we find this HUGE ball of iron ore, I kept begging him to mine it so i could smelt it, sell it, and make a fortune.
Edit: Then sell my story to the Minecraft supermarket tabloids