Puberty explained... by a talking penis. NSFW unless your workplace doesn't care too much about talking cartoon genitals and some frank depictions of sexual acts. Voiced by Amy Sedaris, of Strangers With Candy fame and sibling of that writer guy. Warning: Flash Aaaah! He'll save every one of us!
Apparently, it's a part of a larger work, a live action movie called "Puberty: The Movie". Nothing on IMDB about it that I could find, though.