Prod

The prod is used to push an enemy worm over an edge. Usually you would use prod to push an enemy into the water. You can also push a worm over a ledge so he falls to the ground, in order to kill a weak worm, especially if there are mines over said edge. This is the most sarcastic way to kill an enemy, and is considered poetic justice if you cross half the map to prod your opponent off the map rather then just fire your last Holy Hand Grenade.

The victim does not have to be standing on the very edge but close to it for the prod to work. The advantage to using a prod is that there is no risk of collateral damage.

A danger is that, if you are standing slightly above the intended victim, you may prod right over his head, missing him and wasting your turn.

A suggestion would be to do it to worms that are by the edge of a cliff overhanging water, since if worms fall into water, they die.

(TIP) If there are a trio of worms lined up right below each other with some distance ahead from one to the other, you can prod the one on top and it will send a chain reaction through the entire trio and hopefully push all three of them into the water (or wherever you are aiming for).