[xanderlewis]

and a monad is a monoid in the category of endofunctors.

[saghm]

A monad is a monoid in the category of endoplasmic reticulum

(I've made this joke before, but I've never had a chance to in a context where both parts of the malapropism are relevant!)

[tpoacher]

They rely on Functors, which are transcribed at the ribosome!

[proc0]

Nah, it's a burrito.