There is a lady who works at the local pet store here who hums CONSTANTLY. If she is not actually speaking, she is humming ... even between sentences when YOU are speaking. But she is such a sweet lady, everyone just thinks its cute.

Humming doesn't really bother me that much. My mom hummed a lot when I was growing up, so I'm used to it. And it seems rather soothing to me, I suppose because I associate it with my mom.

Whistling tends to drive me crazy, though. I don't mind if it's soft and in tune. My husband whistles all the time, if he is happily doing something. I want to strangle him. He is very loud, off-key and whistles the same verse over and over and over. I feel bad telling him to stop, because he's just being happy and doesn't even realize he is doing it. But how much "Green Sleeves" or the theme from the Muppets can one take?