I think I might also add I tend to use a verity of "Hmm" noises with my boyfriend. Haha he's managed to decipher what each tone of "Hmm" means, the most frequent one is a low short tone which signify's "i don't really approve of what you're saying right now but can't be bothered to argue"
So this is what is wrong with me, I am extremely blunt about things if I mean no or yes that is what I say (probably gets me in more trouble though) I think I missed the part in life they teach girls this type of thing. Oh well. Although I have heard friends and relatives talk like that, usually I ignore anything that isn't a direct yes or no and do whatever I think they mean. Oops.