Crying Obsidian

Crying obsidian is a manufactured block, which means it doesn't generate naturally. It actually used to be in Minecraft itself, but was taken out. Its original use in the game was to reset the players' spawn point.

It's texture was taken from the Minecraft wiki, but it seems to have an old obsidian texture, with water "drips" overlayed on to it. If an empty bucket is clicked on it, it will change to normal obsidian. When player is on fire, walking on this block does not put the flames out, but the player can right click the block to do so. This does not remove the block.

Obtaining
You can hold a water bucket, shift then right click on obsidian to change it to crying obsidian. You will then have an empty bucket. You can then hold the empty bucket and right click crying obsidian to get a water bucket and change it back to obsidian. It will not place a water source block down.

Usage
Could be used as a utility block for putting out flaming players. But also could be used for an unusual decoration block.

Trivia

 * The block's material was water, but it wasn't intentional at first.
 * The block's material was kept the same, as it had interesting properties.
 * In the snapshots of beta 2.0, the material was changed as it was annoying that it was being replaced by other blocks.
 * Walking on the block while on fire does not put the flames out.
 * Right clicking the block while on fire puts the flames out.