PSA: Girl=female, human child or teenager under 20 years of age.••••••••• Boy=male, human child or teenager under 20 years of age. ••••••••• MAN=ADULT human being, carrier of xy chromosomes, 20 years of age or older (LACKING A WOM.••••••••• WOMAN=ADULT human being, carrier of xx chromosomes, 20 years of age or older (HAS, OR ONCE HAD, A WOM.••••••••• Male=spices of animal, refers to gender, carrier of xy chromosomes••••••••• Female=spices of animal, refers to gender, carrier of xx chromosomes.••••••••• End transmission.