Girdering an occupied location
From Worms Knowledge Base
The Girder placement glitch is when a girder is placed anywhere, with complete disregard to terrain, worms, and objects that would normally be in the way. Any worm or object that the girder is placed on will fall through the map until it reaches an open area beneath it or falls into the water. It has been fixed in Worms Armageddon, however it is can still be performed in Worms World Party.
How To Perform The Glitch
To perform the glitch, select a target using Homing Missile or Homing Pigeon (but do not fire). Then, select the weapon before girder. Then you need to precisely hit F7 and Space at the same time. (If you are on a Jet Pack, Ninja Rope, Bungee, or Parachute, hit F7 and Enter instead of F7 and Space.)
This glitch is present in Worms World Party, and has been fixed in the 3.6.19.7 W:A Beta update (after a partially failed attempt at fixing it in 3.5 Beta 1).
