This made me laugh out loud, so the answer, for me, has to be cheese.
-Mosquito
As The Cheese Shop Sketch has already been mentioned, I would like to add the funniest thing in Football is the Cheese Heads. No sillier group exists in American Sports.
Additionally Cheese humor is a major part of the Wallace & Gromit humor.
Cheese also was required for the Cheeseburger, Cheeseburger skits from SNL.
I guess what I am trying to say is this Op is quite Cheesy. 
Jim
Pickles.
Scrubs fan?
**Pickles! **
If pencils were funnier, Monty Python would have done a sketch about them instead.
I’m tempted to say cheese also, but I am amused by the thought of a young adult reading a coming-of-age novel called I Am The Pencil, so I call it a draw.
Pencils are not funny. Scroll down.
Also, I second farts.
…but how about rubber pencils? Eh… come to think of it, not all that funny either. Okay, okay, pencils for drama, cheese for comedy.
A pencil could do a dramatic soliloquy much better than a cheese could.
Anyhow, here in California, the local cheese promotional board has gotten out a lot of entertaining ads & commercials, so I think we might be a little biased here on the Left Coast.
Any guesses on what I think?
But rubber cheese is funny. Many moons ago while in high school, I had a part time job at a Jack In The Box. We had a police officer that would come by nightly and insist that he should get his food for free because he was keeping us safe from all the bad guys lurking in the shadows that would pounce and rob us if he was not around. After the usual “We will get fired for giving away food”, he would relent and pay for his order. I visited a gag shop and found something that would be perfect for the officer, a piece of yellow rubber that looked like cheese. That night he gave his usual order and much to his surprise, his order was on the house. We watched him drive off with his order only to make a quick U turn and come racing back to the restaurant, he even used his lights and siren. He came inside and read us the riot act. I was hiding behind the counter laughing myself sick. We gave him a couple of burgers with real cheese to keep him from calling the manager. Cheese is much funnier than a pencil.
Pencils are sad little overstuffed hollow toothpicks being buggered by a piece of graphite. Nothing funny there.
Whereas, if you find a hunk o’cheese that fails to amuse you, there’s always the option to eat it.
So, cheese.
Didn’t Zaphod have a second-hand Biro business? Or was it pencils?
Cheese is made from aged mammary fluid and goes well with crackers. Pencils are made of wood and are used for writing. I’m going to have to go with cheese.
Incidentally, no. I just really like pickles, and find them funny.
Since this is essentially cough a poll, I’ll move it to In My Humble Opinion for you.
Cajun Man
for the SDMB
I don’t want a pickle
Just want to ride on my motorsickle
(Arlo)
Moe, Larry, the pencil!
I don’t think so. Cheese for sure.
The answer is cheese, Gromit.
I have used a cheese pen. Its alot like those chalk-holders that professors use when they don’t want to get chalk all over their hands, but instead of chalk, it has a food-grade purple wax. You can write or draw all over cheese with it. Then you can keep it for ever and ever and ever or eat it. It’s pretty shredded and cooked on a pizza. Mmmmmpurplepizzzaaaaaahhh
Cheese is funny…pencils are dangerous
Here’s my is-it-funny test:
If you’re taking a poop, and you poop out the object in question, do you laugh when you see it floating in the bowl?
Cheese: Kinda gross.
Pencil: Kinda makes me giggle.
Pencil wins.