Two years old stands up to pee

We are potty training our two years old and it goes okay, he realises when he needs to pee and goes to the potty. However he pees standing up and of course it goes everywhere. He's been to the bathroom with his dad (we are together and live together) who stands up to pee and since he's a daddy's boy I'm assuming he wants to do the same as daddy. He follows me to the bathroom as well and sees me sitting down. I've tried to make him sit but he refuses to and will throw a tantrum if I try to make him sit on the potty. I've also asked his dad to sit down and pee so our son can learn, but he refuses to as he doesn't see the problem with him standing up to pee as "that's how men do it". Any advice?