Im not sure which is the chicken and which is the egg but ive been pretty grouchy lately as well with my increase of marijuana use in the last month or two. I kinda assumed the anger was always there and now that the depression doesnt have me in the vise grips that it can come out easier. On the other hand doesnt it seem weird that marijuana would make people grouchy? I always figured it made people mellow. But i definately am noticing the grouchyness. Intresting topic anyway.