My 3 year old is showing some interesting gender related behaviour. He loves having his nails painted (only in pink) only wants pink sippy cups, and is showing a preference to his cousins clothing. My wife knows about me, and she is extremely ok. The rest of the family does not. My dad saw Chris last weekend with his nails painted and flipped out. My reaction was not the best i.e. he is my child he likes i am ok with it and if u dont to freaking bad.. I am really unsure the best way to handle these things in the future As I will not force my son to not have it if it makes him happy.