Drano gender test

Has anyone tried this and then had it be true?

For those of you that dont know, its when you pour your pee into a cup of draino. If it turns brown in ten seconds, its a boy. if it doesnt change color, its a girl.

It's like all the rest of the gender predictors. 50/50 chance of turning out right!

and Draino isn't anything you should be around when pregnant.

Yeah I've heard that it's dangerous and you shouldn't bother. I'd rather use one of the safer old wives tales. Like heartrate or cravings or whatever.