HPT with bleach? 😱

Ish
So I have been watching tons of videos on YouTube of women taking hpt' with bleach... They would pee in a cup and put bleach on top of the pee. If it foams and stays like that, you are preggo, otherwise, you aren't. 
What do you think? Any pregnant girl who would like to test for us to see if it's true? Lol!