http://mx.youtube.com/watch?v=ukAEL8CLJEU
It says in the description the following:
Kazooie wrote:Last one is weird one. There is Bonus end of "Poisonies Pipeline" stage. If you don't go there. just swim in that spot what I show in video end of stage. You will somehow warped to there where bonus stage end barrer should take you.
This glitch only work when you enter to the stage and don't get last bonus and when you done it one time it doesn't work anymore if you don't select stage again. Weird one ^^
Last week, I decided to play the level, which is rare in me (5th pun =P), and I never died, didn't touch the Midway Barrel, but I entered the first bonus. Now I went through the last 2 red kocos with Dixie only only and it teleported me. I say, it's weird, seems like there's some missing code in the level. Besides, the invisible barrel is to the right of the G, while the actual Returning-from-Bonus barrel is to the left of the G.
I must say Kazooie seems to have the PAL version, while I have the NTSC version.