Here are 51 Christian Friendly words for penis. My personal favorites:
Satan Scepter
DNA Rifle
Sin Stick
Love Lure
Secret Lollypop
Musky man candy
Although I gotta say, I did laugh my ass off at Michael's Short Arm, too. Despite the, erm.... Thoughts that one brings to mind.
And since we can't leave the ladies out....
Here's the same post for the lady bits Including, but not limited to....
Satan’s Doorbell (Clitoral muscle)
Flap Dragon
Bullet Wound
Pink Velveeta Shell
The Pubic Pub