a subscriber keeps pestering me with this question (well, she's asked three times now), about which I am clueless. originally she thought the word was "bobbycock", but she thinks she's got it now.

Can you tell me the meaning of "bumbly cock" as in the quote below,

A man is as proud as a " bumbly cock", who's half as proud as a piper.

Probably of Scots origin, because it was quoted to me by a friend who is of Scottish background and who plays the bagpipes.