Baking Soda Urine Test

Has anyone tried the baking soda urine test to predict the gender? I'm dying to see if it's accurate or not!  I did it and it indicated girl, but I don't know what we're having yet. Two people I know tried it and it was right. You put one-two tablespoons of baking soda in a clear cup and pee on it. If it fizzes it means a boy and if it doesn't it means a girl. Fizzes meaning like a shaken up soda.