There’s nothing irrational about laughing at these funny pi jokes and puns! Celebrate pi day with some straight-to-the-point math humor!

## Funny Pi Jokes

I used to know a guy named pi, but we stopped talking because he just kept going on and on and on…

If you have a pizza with radius ‘z’ & height ‘a’, its volume is pi*z*z*a.

What is a pumpkin’s circumference divided by a pumpkin’s diameter?

Pumpkin pi.

Not to brag, but I know the first 40000 digits of the expansion of pi.

Just not in the right order.

What do you call a snake that’s 3.14 meters long?

A pi-thon.

How do you come up with a secure password to protect yourself against hackers?

Just make it the last 10 digits of pi.

Me: I dreamed my teacher is making me read out endless values of pi.

Psychiatrist: Is it recurring?

Me: Not as far as anyone can tell.

3.14% of sailors are pi rates.

The fattest knight at King Arthur’s round table was Sir Cumference.

He acquired his size from too much pi.

My friend asked me how hard it is to calculate the area of a circle.

I told him it’s easy as pi.

Why is a priest’s favourite number 3.14?

Because they are very pi-ous.

I don’t understand why people celebrate pi day.

It’s irrational.

Eating too much cake is gluttony, but eating too much pie isn’t a sin.

Because sin pi is always zero.

What do you get when you eat 3.14 cakes?

You get fat. What, were you expecting a pi joke?

My Dad is a mathematician and exclusively has cake for dessert.

Because having pi would be too irrational.

What do you get when you divide the circumference of a jack-o-lantern by its diameter?

Pumpkin pi.

I never refuse pi.

That would be irrational.

How do you calculate the surface area of a cephalopod?

Using octo-pi.

Doctor: On a scale from 1 to 10, how much pain are you experiencing?

Patient: pi.

Doctor: pi?

Patient: Low level, but never ending.

Want to see all the decimal digits of pi?

They are {0,1,2,3,4,5,6,7,8,9}.

A math professor, John, is having problems with his sink so he calls a plumber.

The plumber comes over and quickly fixes the sink.

The professor is happy until he gets the bill.

He tells the plumber, “How can you charge this much? This is half of my paycheck.”

But he pays it anyways.

The plumber tells him, “Hey, we are looking for more plumbers. You could become a plumber and triple your salary. Just make sure you say you only made it to 6th grade, they don’t like educated people.”

The professor takes him up on the offer and becomes a plumber.

His salary triples and he doesn’t have to work nearly as hard.

But the company makes an announcement that all of their plumbers must get a 7th grade education.

So they all go to night school.

On the first day of night school they all attend math class.

The teacher wants to gauge the class so he asks John, “What is the formula for the area of a circle?”

John walks up to the board and is about to write the formula when he realizes he has forgotten it.

So he begins to attempt to derive the formula, filling the board with complicated mathematics.

He ends up figuring out it is negative pi times radius squared.

He thinks the minus doesn’t belong so he starts over, but again he comes up with the same equation.

After staring at the board for a minute he looks out at the other plumbers and sees that they are all whispering, “Switch the limits on the integral!”

How many digits of pi do you know?

All of them… I just always forget the order!

I just bought a movie with 3.142 stars out of 5.

It was a pi rated DVD.

Why is 6 afraid of pi?

Most say it’s an irrational fear.

A maths professor was struggling to teach his student the first 10 numbers of pi so he started singing a song which was meant to teach people about the numbers of pi.

The students were intrigued by this mesmerizing little poem and by the end they had learned the first 10 digits of pi.

Next, the teacher asked each one to write down the first 10 digits onto a sheet of paper and hand it in.

Everyone finished in 2 minutes, and they all went to break.

When they came back, the teacher was furious.

It turned out they had all written ‘3141592653’.

All the digits were correct of course, but the decimal point was missing.

The students couldn’t figure out their mistake, so the professor gave up and written down the correct 10 digits of pi.

But alas, the students still couldn’t see the problem.

Finally, the professor sat down, took off his glasses and sighed, “You guys are all missing the point!”

## More Funny Jokes

If you enjoyed these hilarious jokes about pi, be sure to check out the rest of LaffGaff for lots more funny jokes such as these: