Question: What does a *dry* sense of humor mean? 

[This article](http://www.ehow.com/how_2151193_develop-dry-sense-humor.html#ixzz1IGUHd0GX) explains how to develop it, but not what it is.

> 
> **How to Develop a Dry Sense of Humor** 
> 
> 
> Developing a dry sense of
>  humor can be challenging and fun.
>  Learn how to develop one. If you
>  really want to (and you know you do)
>  then read the article.
> 
> 
>

Answer: 
Here is a relevant definition that says it all:

> 
> **dry** *adjective*  
> 
>  (of a joke or sense of humor) subtle, expressed in a matter-of-fact way, and having the appearance of being unconscious or unintentional:  
> 
> *he delighted his friends with a dry, covert sense of humor*
> 
> 
> [NOAD](http://oxforddictionaries.com/view/entry/m_en_us1242243#m_en_us1242243)
> 
> 
>
It should mean being sarcastic and ironic.

Check my answer here: [The word ‘dryly’ as an adverb](https://english.stackexchange.com/questions/18840/the-word-dry-as-an-adverb)