Transcription: A screenshot from tumblr. There is a two panel comic of a yellow snake. The first panel is the snake saying "I may not know much". The second panel is a closer shot of the snake with no text. Below the comic is the following:
william-snekspeare:
the second panel was originally going to have words but I decided it was better without them
"I may not know much."
That is a complete sentence.
You are correct. The absence of the period was messing my mind.
I think that's the joke