Red cabbage gender prediction

Shon

Has anyone heard or tried the red cabbage geneder test? Basically you buy red cabbage from the store.. boiled the cabbage for 10 minutes, take the juice from the Cabbage along with your urine pour it in a container or a cup.. if it stays purple it's a girl if it turns red or pink it's a boy..

I've tried that this weekend at my house, my came out purple.. this isn't my picture I just screenshotted this off the internet the show.