yes, it does. my father was a nice pothead, and i'm a girl. but thats not my only reason. my parents had to go through genetic testing because my dad was a full italian, and my mom wasn't a pure nationality (blah, blah, blah, "mixed nationalities" are better than "purebreds" ex. italian vs sweedish/polish/english etc). whilst doing so they found out that yes, smoking pot decreases your chances of having a boy