What is a "pull request"?

[Mehrdad]

On Saturday, 11 May 2013 at 07:47:34 UTC, skeptical wrote:
> In article <fnowiixgzpanettkebjp at forum.dlang.org>, 
> public at kyllingen.net says...
>> 
>> On Saturday, 11 May 2013 at 06:07:39 UTC, skeptical wrote:
>> >
>> >
>> > What is a "pull request"? Thank you.
>> 
>> 
>> https://help.github.com/articles/using-pull-requests
>
> I asked you, you tell me. I don't follow links anymore. I am 
> beyond that. So why don't you shush (I'm known to say it worse) 
> if "you nothing to add"? (Bitch).

Whoa, what the heck happened here...