In the song Pooh comments about the on-screen actions where he is pretending to be a "Little Black Rain Cloud", as the title implies. It is Pooh's hope that the bees will not notice him as he approaches their ever coveted honey.
I'm just a little black rain cloud
Hovering under the honey tree
I'm only a little black rain cloud
Pay no attention to little me
Everyone knows that a rain cloud
Never eats honey, no, not a nip
I'm just floating around over the ground
Wondering where I will drip
Pooh: Christopher Robin! I think the bees S-U-S-P-E-C-T something.
Christopher Robin: Perhaps they think you're after their honey?
Pooh: Why it maybe that. You never can tell with bees. I'm not a hungry old Pooh cloud I'm just a little black rain cloud, And no one knows better than me bees, Stealing your honey is not allowed. You know a hungry old Pooh cloud Doesn't get hungry, no, not at all, I'm just floating around over the ground Wondering where I will fall.