Banjo-Tooie Cheats

OK I don't know how this happened but still. I was up to the part of the game where you haven't learnt how to carry things in banjo's bag, but he can still do bill-drill. At spiral mountain I bill-drilled the rock which banjo's fish is under, then i went swimming in the water fall near a flying pad (meanwhile the fish had been sayig things like "i would appreciate some water"). Eventualy you see the fish fall into the waterfall and give you the extra air bubbles.
Note: You may have to leave (spiral mountain) after bill-drilling the rock