Your Mama's so stupid she wouldn't know up from down if she had three guesses! 3885. Your Mama's so stupid when I said we were playing craps she went and got toilet paper! 3886. Your Mama's so stupid she thought Sherlock Holmes was a housing project! 3887. Your Mama's so stupid she thought Thailand was a men's clothing store! 3888. Your Mama's so stupid she thought the board of education was a piece of wood! 3889. Your Mama's so stupid she thinks Tiger Woods is a forest! 3890. Your Mama's so stu…