"with red protruding eyeballs, and black protruding tongue."
I think this was to show what a *beep* poet Barlow really was. When he was composing a poem for his dead uncle, he's shown walking around Whispering Glades improvising the poem, not writing anything down. And it turns out that this is exactly what he gives Sir Ambrose to recite at the funeral. That's what so funny about it. He sincerely wrote that crappy poem for the funeral in all seriousness.
There is no "off" position on the genius switch.