The Tale of Steve the Sadistic Robot.

Once there was a lad in a class who had nothing to do. So he did this:

Once there was a robot called he Steve. He was a bit of a recluse and spent most of him time writing dreary poetry and slashing his robotic wrists. This was all very easy for him, because he couldn't feel pain. He was a robot. He liked to think about pain, though he couldn't inflict pain upon himself, and his programming prevented him from inflicting pain on others.

Steve spent a lot of time doing not very violent, but almost torturous things. Like crucifying himself upside-down on a cross made out of the limbs of his obsolete previous models, and simulating his own drowning by putting himself on a long cycle in a washing machine. Steve couldn't do any real damage to himself, because he was invincible. This was an unfortunate by product of the time he spent near the Tinkers shack, where he had to recharge himself sometimes. While Steve was offline, the Tinker decided it would be the perfect time to add unneeded extras on to Steve, like giant crab claws, a giant clown wig and a giant bunny ears.
The Tinker was putting a huge cramp on Steve's emo style, and Steve made the decision that the Tinker was a massive douche.

Late on a cloudless night Steve crept into the Tinkers shack, disarming the bolted door with his crab claws. Then, utilizing some ad-hock brain surgery equipment, he planted an egg from the last living creature on the earth, the Gigantic and Incredibly Nightmare Inspiring Cuttlefish.

A few weeks later Steve awoke to the sound of tortured screams, and he was finally happy with his life.