certain characters not being used by
the game, obviously.
By normal means you cannot use the Slingshot outside of Context Sensitive zone areas, but by hacking the game, you can make Conker in multiplayer mode(or any else multiplayer character you're playing as) launch an “conker” as if he were actually using the Slingshot(the nut’s image will disappear in Multiplayer, as it’s not “supposed” to be spawning there). if the “conker” hits another multiplayer character, he will get hit, and jump in pain as if he were stung by a wasp, but launched into the air higher than usual, before coming down again.
From my observation, it's possible that this behavior is leftover from Twelve Tales, which were presumably intended for that prototypes multiplayer mode if another Conker character gets hit by a nut fired at him. By using the below Gameshark code the player can fire an nut whenever D-pad Up is pressed. It is a bit buggy at times, and could also cause the player to get stuck in his place sometimes, but its usable, and works quite fine.
press D-pad Up to shoot a conker (C.Guru)[PAL]