The point of the topic isn't to point out that "penis" is a funny word. Oprah was responding to a message left on her message board, yes. The
point is that someone acting as a troll only did that because Oprah, someone who was sexually abused when she was younger, is an active child abuse spokesperson. The message was left to basically bring the "over 9,000" quote to a different level outside of the internet, and the troll won.
Since it's likely that neither Oprah nor her staff actually understood the premise of "over 9,000" on the internet, at least before she said that on her show (bet they know now! haha), it's no surprise why her or her staff weren't able to catch on that it was a hoax setup by an internet troll.
That's what makes this funny, not the word "penis". I didn't really think that needed to be explained... but... meh
-DarkPacMan77-