How much alcohol content (%) would it take to get drunk?

Because you only weigh 140 and are kinda tall and haven't drank much, I bet 3 stiff mixed drinks or 6 beers would mess you up pretty bad if you down it fairly fast. This is just a guess so don't go out and get alcohol poisoning because of me. If you drink slow you can gauge how drunk your getting as you go and in this manner find out your own limits without getting all sick and stuff.