I forgot to say, my usual answer to this is the question "how old do I look? and try to change it from there...
Yesterday that I went to a christmas party I actually turned the question into a neg, the girl was like " so... how old are you?" I just said " 15, and that's why I haven't hitted on you, I wouldn't like people to ask me if you are my mother or something if we ever went out "
I ignore her and I turned my back and she said to me "we could go out and I could prove you wrong" I imagine that it worked, but I don't like to be seen as this "aww how cute!" kinda guy.
EDIT::// Whoopsy I posted a new thread, if someone could delete this I would appreciate it, thanks
