Mole Day Jokes and Humor

Mole Day is October 23 from 6:02 a.m. to 6:02 p.m. in honor of Avogadro's Number (6.02 x 10²³). A mole is a unit of measurement used when existing measurements are inadequate, and its particle measurement is based on Avogadro's number. Like Pi Day, which is celebrated on March 14 because it mirrors pi (3.14), Mole Day is celebrated on either October 23 or June 2, because those dates are similar to Avogadro's number. What better way to celebrate a holiday born out of chemistry humor than with jokes?

Mole Day Jokes

Here are some one-liners about our favorite unit of measurement:

Q: What did Avogadro teach his students in math class?
A: Mole-tiplication

Q: Why does Avogadro like Cindy Crawford?
A: She's his favorite super-mole-dle (and she has a mole).

Q: Why is it bad to tell mole jokes?
A: It's mole-itically incorrect. 

Q: What did the generous mole say when people crashed his party?
A: The mole the merrier

Q: What are mammoles?
A: Four-legged ani-moles

Q: How would you describe a stinky chemist?
A: Mole-odorous

Q: What kind of fruit did Avogadro eat in the summer?
A: Water-mole-ns

Q: What kind of test do chemistry students like best?
A: Mole-tiple choice

Q: How rich is Avogadro?
A: He's a multi-mole-ionaire.

Q: Which tooth did Avogadro have pulled?
A: One of his mole-ars

Q: What does Avogadro put in his hot chocolate?
A: Marsh-mole-ows

Q: What did one mole say to the other?
A: We have great chemistry together.

Q: Why was there only one Avogadro?
A: When they made him, they broke the moled.

Q: What illness kept Avogadro in bed for two months?
A: Mole-onucleosis 

Q: What do you get when you have a bunch of moles acting like idiots?
A: A bunch of mole-asses 

Mole Day Pledge No. 1

I pledge allegiance to the mole, and to the science from which it comes, one SI unit, extremely divisible, with micromoles and millimoles for all.

R. Thomas Myers, Kent State University, Kent, Ohio

Mole Day Pledge No. 2

I pledge allegiance to the mole, to the International Union of Pure and Applied Chemistry, and to the atomic mass for which it stands, one number, most divisible, with atoms and molecules for all.

Sylvia Cooper, Morgantown High School, Morgantown, West Virginia

Mole Day Definitions

In addition to one-liners and pledges, there are plenty of opportunities for mole puns:

• Demoleition: Destruction moles cause in your yard (or on your chemistry paper) if you forget Avogadro's number.
• Dismole: Being sad on Mole Day.
• Imoleble: Anything that is completely unrelated to a mole.
• Mol: The symbol for mole (of course!).
• Mole-mole: A mole double agent.
• Molearchy: Government controlled by Moles—Mole Day is celebrated more than once a year.
• Molebile: A mole decoration that hangs from the ceiling.
• Molect: The obsessive collection of Mole Day T-shirts, games, and other mole stuff.
• Molectomy: The study of mole anatomy.
• Molehill: A small mound of dirt in your backyard made by burrowing moles.
• Moleism: The reverence given to moles on Mole Day or on any day by a chemist.
• Molelaberate: Working together on a Mole Day project.
• Moleodic: A word describing the sound of Mole Day songs.
• Molesquito: A tiny, winged, mole-like creature that drinks the blood of a person who forgets the date of Mole Day.
• Remolte control: A device used to watch television shows about chemistry and moles.
• Remoletly: Having to do with mole, but barely.
• Sophomole: Anyone in the 10th grade who is taking chemistry
• Thermole: An adjective describing one mole of an explosive.