Do you know as a male you were once a female and you once had a nipple? ,check out this amazing revelation

Men have nipples because every fetus
is a female until the Y chromosome
kicks in.
Men have nipples because, as an
embryo, everyone is a female until the
Y chromosome kicks in.
After conception, the human embryo
develops as a female. Only after 6-8
weeks does the Y chromosome kick in and
the fetus begins developing male
characteristics. By this point breast
tissue, milk ducts and nipples have
already formed. This happens in all
mammals, the only exception being
stallions, who do not posses nipples.
Generally evolution will only weed out a
characteristic if it proves harmful to the
creature, and of course, although having
nipples provides no benefit to a man it
has no ill effect either. Darwin (and
others) wondered if at some point in the
very distant past the males of a species
from which we are descended suckled
their young.