 Just what you should do with your life. What should I do with my life? Oh, there I did it again. It could be what you should eat, what you should wear, what you should... And a lot of times it's conditional. This is what you should eat if you want your breath to smell like monkey butt or something. A lot of times it correlates with the thing you want it to smell like. So let's say I want my mouth to smell like peaches.