Balls (testicles, nuts); the way a bum utters the word "balls." A slackish fashion in which to say the word "balls." Such a pronunciation denotes two things: 1. the speaker is using the common slang term for testicles (the term in not used to refer to objects such as baseballs, basketballs, etc.); and 2. the speaker is slack-jawed, speaking in an overly oafish or relaxed fashion, thus the alteration of the standard pronunciation.
Oh my baws.