Go to Bubblegloop Swamp, and go to the area with the huts on tall poles, with platforms at the bottom, underneath one of them is a Pink Jinjo, which can only be collected as Crocodile Banjo, or so it would seem. Position yourself so your back pack is over, and jump and press Z, if timed correctly Kazooie will go through the floor slightly as the Jinjo jumps, causing you and the Jinjo to connect.
This is useful for speed-runs, as it saves a journey.
Discovered by: Articerile
A Youtube video of this glitch can be found here.