A few months ago my 14-year-old son's biology class had to act out the female reproductive system (I question his teacher's motives, but never mind). My son was narrator, and told me he used his best Morgan Freeman voice. Apparently it took the edge off the other students' acute embarrassment.
I think I snagged it off Facebook. Feel free to snag yourself, as it's not my photo. I don't know who to credit for it, as it was doing the rounds for a while before it showed up in my friend's feed.