Ok here is the thing...my girlfriend got some K from her dealer and we have never done it before. I guess she got 20 dollars worth..but I cant tell exactly how much cuz I've never taken it before. He is my question...if this is 20 worth how much should her and I take. if we split it 50/50 is that going to be too much....or should we take about 25% at a time??? Any info would help thanks!!!