This newsletter attempts to combine mathematics and humour.

Check how many you've used in your lifetime.

From the Oxford Mathematical Invariants Society.

Glass Klein bottles of all types.

Annotated links to math jokes, humor and mathematical recreations.

Over 120k of jokes.

Guidance on how to remember this diffuclt number to several decimal places.

A humorous and sometimes metaphysical look at the world of mathematics.

Register a real or natural number in your name or that of a friend. Supplies may be limited.

Abbott and Costello's wacky math.

Short page of jokes and lists.

Jokes, puns, and limericks having to do with mathematics. Also provides a link to the math humor e-book, Nowhere Dense. Content changes daily.

A page of math jokes.

A collection of jokes about math and mathematicians.

A collection of academic jokes with an emphasis towards mathematical ones.

Definitions, anecdotes, and limericks about math and mathematicians.

A collection of stories, limericks, questions and answers, and links.

Jokes about mathematicians (part of the Profession Jokes site)

Henry Bottomley's collection.

The bumbling Discriminant Boy is just the Zero mathematics needs.

Calculus - a bane to millions of students.

Part of the Index of Canonical Lists. Plenty of other fun stuff on the site as well.

We show that, in the context of Moore's Law, overall productivity can be increased for large enough computations by `slacking' or waiting for some period of time before purchasing a computer and beginning the calculation.

Bi-monthly humorous math newsletter featuring interviews with famous mathematicians and scientists. Includes puzzles, limericks, and riddles.

A collection of math humor links.

Not all of these are mathematical in nature, but many of them are.

From the Topology Atlas.

Explain it if you can.