The math term “rhombus” sounds like “wrong bus,” and there’s a pun:

*Q: Why was the math teacher late for school?
A: He took the rhombus.*

“Rhombus. Wrong bus?” was posted to the newsgroup alt.timewasters on January 12, 1999. “In Italy, I took a rhombus to get to the Vatican (Richard Lederer)” was in a “Puns of the Weak” post to the newsgroup alt.humor.puns on February 16, 2001. The math joke has been printed on several GIFs.

Math Open Reference

*Rhombus*plural:

*rhombi*

Definition: A quadrilateral with all four sides equal in length.

Google Groups: alt.timewasters

Geometry

*Judy Stephens*

1/12/99

>>>>>>>>Everyones! I take no sides.

>>>>>>>How about angles?

>>>>>>Nope - I’m too square!

>>>>>I thought you were obtuse!

>>>>No, I am running around in circles.

>>>Parallelogram?

>>Hypotenuse? Pythagorean Theorem!

>

>Rhombus.

Wrong bus? Hey, Taxi!

Google Groups: alt.humor.puns

“Puns of the Weak” 2/16/01

*Stan Kegel*

2/16/01

(...)

In Italy, I took a rhombus to get to the Vatican (Richard Lederer)

Wolf Pack W.O.W.

February 16, 2005

*He Took the Rhombus*

Johnny Worthington

@jworthington

When visiting Italy last year, I got lost going to Florence and took the rhombus

10:04 PM - 22 Feb 2007

DaveCon5

@dave_conklin

I was a gifted child; I took a rhombus to school.

8:56 PM - 22 Sep 2010

Anna

@Markby

Why was the mathematician late for work? He took the rhombus.

3:42 PM - 12 May 2012

Nerf Karate

@ManVsPuppet

Maybe you were such a nerdy kid you took a rhombus to school.

7:57 AM - 26 Oct 2013

ワフラ ノマド マシャカ

@KiddyYusuf

Why was the mathematician late for work?

She took a rhombus

4:12 AM - 23 Jul 2014

Why was the math teacher late for school?

submitted October 16, 2016 by shortsyaq

He took the rhombus