there are 3 kinda of trichomes that MJ grows, Ball, Hair and Stalk, the first 2 are quite self explanitory and the stalk is basically a hair with a ball on the tip, these stalk trichomes are the ones we are after since they contain thc, the ball and hair trichs contain some but no where near the amounts the stalks contain. and based on the amount of hair/ball trichs on those leaves im gonna go with grower13, mind over matter, you may have gotten a slight high but most was more then likely due to the placibo effect. if you really want to test out your bud dont waste your time with leaves, cut a small bud from the lower section of the plant and dry/taste test that, it will be far more worth your time and will give you a much better idea of what yah got then the leaves ever will...