You should've just bent down (to the best of your ability) looked at his junk and said "Not happy? do a better job next time." but I'm pretty sure he was joking

Well u betr hop it iz boi den

Tell him that a real man is secure enough in his masculinity to not need to put down a woman. And then say if his attitude doesn't change there is a hundred percent chance you will leave him. But if he was joking just roll your eyes.

Female sperm swim slower than male sperm but they swim for a longer amount of time. Because of this, statistically, men with shorter dicks are more likely to have daughters.

It's a statistical fact hat if a girl orgasms, she's more likely to have a boy. It's him that's failing.

Your boyfriend's a douche.

I'd leave him if I were you. Your children shouldn't be exposed to such high levels of stupid.

Sounds like you have two choices, really. :|

Lol, hope for the best?

Just kindly let him know it's his fault since his sperm determines the sex of the baby ;)