What do roosters do exactly?

This came out a few weeks ago, but it's still worth sharing.

The clip is of my boyfriend Kevin and co-host Alex on their podcast Diggnation. Apparently no one in the room knew the exact function of roosters in relation to egg laying, so they decided to call me and ask.

Please note: this contains potty-mouth language and is not intended for those with delicate sensibilities. 

Protip: Hens can lay both fertilized (with rooster) and unfertilized (sans rooster) eggs.