On a Minecraft server, my first (and only) ban ever. I had played on this server for about three weeks or so, and was having a great time. I made a lot of friends on it, including a high-ranking mod. Things were good.
Then, I entered a building carved into a hill. There was a bed and an empty chest in there. I took the bed with me, 'cause I needed one. A day later I was perma-banned.
Note: A bed requires 3 wool and 3 planks to make. Punch one tree for 10 seconds, and you have the 3 planks. Punch 1-2 sheep and you have 3 wool. There you go, a bed. A completely worthless item.
My mod friend tried to get me unbanned, but it seems that the admin didn't like me. When I asked him on the forums, he said "Your name doesn't sound cool." My username was just Dave1004, fyi. The admin's name? "Bro2Cool".
I was then banned on the forums as well. I had 10$ in paypal I was about to donate to the server. Never played on another server since, never will. Singleplayer for me.