If police have video (or they just witness it) of you and some friends standing around at a party passing a joint, could they bust you (everyone?) for possession AND distribution? I mean, giving someone drugs is giving someone drugs.
I know that authorities in the past have used other tricks to increase the offenses they can mete out. Main examples I can think of are when police have weighed pot plants they have found growing in homes, they tend to not shake the roots out or trim the leaves and flowers. Thus a pot plant that might have a couple ounces of usable substance weighs in at a couple of pounds due to the stems, dirt, rocks, etc. This is why I am always suspicious of the weights reported during drugs busts.