Well, let's put it this way. Cops have a dangerous job. They have to be a bit on edge in an encounter, or they can end up dead. You, as the person they're stopping to question/search, had better realize this and act as non-aggressive as possible. In fact, smiling sweetly and acting like there's no big deal can lead to them going away thinking they lost pounds of weed and a big big bust, and you get off with the quarter ounce in you had in yer pants. Yep, that is oddly specific, isn't it?