Bukkit

This is how your configuration will look at first (default)

Messages:
  PlayerMessage:
    Enabled: true
    Message: You have been pranked!
  Broadcast:
    Enabled: true
    Message: '#player has been pranked.'
Options:
  ChestDespawnOnRightClick: true
  Explosion:
    Enabled: true
    Radius: 0
    LandDamage: false
  Lightning:
    Enable: true
    EffectOnly: true
  Item:
    Enabled: false
    Drop:
      Item: 266
      Amount: 1

So we will take the configuration step by step.

Messages - PlayerMessage

This lets you configure the message that is sent to a player when they are pranked.

Enabled: true

This is pretty self-explanatory, this will allow you to enable/disable messages sent to a player completely.#

Message: You have been pranked!

This is the message that is sent to the player that is pranked is player messages are enabled above.

Messages - Broadcast

Enabled: true

Again this is pretty self-explanatory, enables/disables messages that are broadcasted to ALL players.

Message: '#player has been pranked.'

This is the message that is sent to the whole server, if you use #player or #location it will display the players username who got pranked and their location and then your message.

E.g. '#player has been pranked so everyone laugh at him.' will be replaced with iKeirNez has been pranked so everyone laugh at him.

Options - ChestDespawnOnRightClick

ChestDespawnOnRightClick: true

It is recommended you keep this to true otherwise players can spam right-clicking the block.

Options - Explosion

Enabled: true

Not even going to bother explaining this :D

Radius: 0

The radius of the explosion (size of explosion)

LandDamage: false

Whether or not the explosion from the chest should cause LandDamge, does not affect TNT or Creepers.

Options - Lightning

Enable: true

...

EffectOnly: true

If this is set to true then the fire caused by the lightning will not do any land damage or player/mob damage.

Options - Items

Enabled: false

...

    Drop:
      Item: 266
      Amount: 1

This will drop an item when the player is pranked, must be a DATA-VALUE and also allows you to set how many of the item will be dropped.

Yay! You have successfully configured the LockedChestSuprise plugin. Here have some free cake.