Baking powder gender test

You put a table spoon of baking powder into a cup and add your urine to it. If it fizzes it means your having a boy and if there's no reaction it means your having a girl. It supposed to work on the theory that if you are pregnant with a boy your wee is more acidic. Therefore causing a similar reaction to if you had added vinegar.... mine was definitely fizziling so boy I'll know for sure in 3 weeks