When you say that someone has something coming out of his ears, what you mean is that the person has lots of it.
Examples: If it is tax forms you want, ask Devidas. He’s got forms coming out of his ears. * If you want pictures of Brett Lee, ask Ananya. She’s got them coming out of her ears. * If it’s an Asterix comic that you want, ask Bala. He’s got them coming out of his ears.