It is a very risky thing to do but there are actually a lot of traders that do that. They mostly do it when they want to trade with brokers that do not support their country. In that case you need to have a payment option that does not show your actual address. If your broker supports paypal then you can use paypal instead.
If you give your broker a fake address then you will still be able to trade as long as your broker has now way of knowing that you are lying about your address. In that case you may have to use VPN because you can't give addresses for the places the broker supports while your IP address shows that you are in another place.