Here is the RLE to reproduce the xkcd pattern in GOL implementations that support Run Length Encoded [1] (b=dead, o=alive, $=new line):

2b3o$2bobo$2bobo$3bo$ob3o$bobobo$3bo2bo$2bobo$2bobo!

In Twitch Plays Conway's Game Of Life [2] you can place Dr. Conway like so:

!rle 2b3o$2bobo$2bobo$3bo$ob3o$bobobo$3bo2bo$2bobo$2bobo! -4,-40

or use the shortcut command:

!xkcd -4,-40

Here is a short clip of what it looks like: https://www.twitch.tv/bzh314/clip/TardyGleamingQuailKeepo

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[1] http://www.conwaylife.com/wiki/Run_Length_Encoded

[2] https://www.twitch.tv/bzh314