A woman has hormones, protiens, etc... that we men do not have, so you'll need to get your sisters urine.
lordsoth666 Reviewed by lordsoth666 on . Can gender be determined by urine can gender be determined by urine. the only 2 clean souls i know are my sis and my bf. of course i cant ask my sis if she'll piss for me cuz she'll rat me out. my bf said he would do it. but he said gender can be determined. is this true? Rating: 5