How to avoid strangers

1. Always look very cold. I don't mean put ice on yourself, but have a very cold expression. A lot of time when I am taking the public transport there will be people with flyers or something they are trying to promote come up to me. The one thing is I immediately look very cold or somewhat angry so i avoid having to talk to them. However, if its a cute girl or have something interesting I wont mind stopping to see what it is.
2. Walking really fast so they can't catch you. Guys the world out there is like a zombie land. if you can run very fast you will always avoid stranger talking to you. why because when they want to get your attention they go for people who are taking their leisure time to walk. if your look like your in a hurry they won't even bother talking to you.
3. this trick might not work very well but always blend in with a group of people who might not look as harmful as other strangers are. in a way it gives them a feeling that your not alone so you will avoid stranger who target the lonely ones.
4. IF and only IF they do stop you for whatever reason because you give in. always have a sharp tongue. if they ask you for something just say NO, NO NO NO NO. and NO

if you can follow this 4 tips i am sure no stranger is going to approach you.