A lecture.
They don't tell you
Two. One to get up on his high horse and another to chastise the first about oppressing horses.
Only 2, but I have no idea how you're gonna fit both of them inside a lightbulb.
Very, very hungry.
I can smell your Kant.
A hemogoblin. I came up with this during lecture after a dyslexic moment, thought someone may like it.