YTA. In that situation you're asking someone else to pull out in front of you when you have the right of way, which means you're really asking them to trust you without even knowing you. If something happened and there was an accident, the other driver is the one who was turning when they didn't have the right of way. Just stick to the rules and things go much more smoothly. The only time exceptions are warranted are if there's a crazy amount of traffic in one direction and the other car would have to wait like 15 minutes to turn. In that case, the benefit of getting to turn sooner probably outweighs the fact that they don't have the right of way.