Did the modified right-click menus work for you? If not, and you don’t mind spoilers, you can read everything here.
Speaking of the Explain xkcd site, if any of you want to add an Explain button to the comic, my userscript for that is here. I actually had to modify it, as this comic broke it. Hopefully it is now more robust.
This is really weird.
As a responsible computer person of course I have right-click menu mods disabled. No way do I let a web site mess with that.
RM is enough of a computer person to know about this and should have a similar attitude.
So what is going on here? Why on Earth try something like this when it should not work for any reasonably knowledgable user. (And if browsers were done right it shouldn’t work for anyone.)
Moving on…