Banjo-Kazooie Wiki

In Banjo-Tooie, the Pack Whack is an attack ability for Banjo learned from Witchyworld, and can be used simply by pressing B button (N64) while Banjo is alone. After splitting up, Banjo can swing his backpack around and hit enemies without the risk of injuring Kazooie. Although it is a relatively weak attack, it doubles as a jumping aide, since Banjo will hover for a second or two as he swings the pack, allowing him to jump farther. In addition, a glitch allows Banjo to jump a second time after using the move, ultimately allowing him to gain more distance and more height than he and Kazooie would with a basic jumping ability like the Feathery Flap. The Pack Whack is notable for being the first character-specific move that is learned in Banjo-Tooie.

The Pack Whack is also featured in Banjo-Kazooie: Grunty's Revenge, and is learned from Bozzeye in Spiral Mountain for 10 Musical Notes. This is the first of fifteen abilities Banjo and Kazooie learn in Grunty's Revenge. Pack Whack may be used by having Banjo stand still and pressing B button (GBA), but instead of swinging the pack around, he slams it on the ground. In this game, he can still use it even after saving Kazooie.

One noted unintended use of the Pack whack is to get the honeycomb piece in Witchyworld by double jumping- then pack whacking into the grate next to the Kazooie only mini game and touching the piece, allowing you to collect it.