If you search for the phrase “obligatory XKCD” here on the BBS you’ll find 50 results (as of this writing.) As Cory has pointed out Randall Munroe is “one of the web’s most talented storytellers” and over the last decade it seems there isn’t a topic or aspect of the human experience that he hasn’t touched upon.
I think it’s time to include an XKCD button in the post editor, right next to the emoji button. When clicked, you can either insert a comic number (i.e. 1250) or you can search by topic, date, line of dialogue, etc… In this way we can facilitate the natural evolution beyond reaction GIFs into commentary XKCDs, and we’ll also minimize the number of times the same comic is saved locally by the Discourse servers.
For the typing purists, I imagine this would work in the post itself like a pseudo-HTML tag; <xkcd = 1250>.