Gandalf and Mario

Alright, listen up, Charles. You posted this, which already shows a lack of smarts. This is a pun. Get it? Gandalf says "You shall not pass!" in Lord of the Rings. Mario has to pass in his games to win, and he encounters shells on his journey. So, using "shell" instead of "shall" makes it funny. I'm a bear, and even I get it! Also, you are not very bright.