Further proof that God created us

Description: Inspired by Ray Comfort's most persuasive 'banana video' - http://www.youtube.com/watch?v=2z-OLG0KyR4 - the Holy Spirit led me to another sign of God's Hand in His most wonderous Creation! Let's see if those know-it-all atheist's can answer this one! Praise His glorious name!! (Contains anatomical drawings of genitalia and their function. Don't watch this if you're uner 10 years old and/or are a YouTube reviewer.)