Same Joke ; Too Slow.
Used in a chat conversation when you are about to make a joke, but before you can finish typing, the other person has already commented with the same joke you were attempting to make.
Them: "I'm gonna send you NSFW links at work! Here, www.unusually-flexible-sexy-people.gov"
You: "Thanks for making it a .gov URL; that's a good way to avoid it being real by accident."
You: (starting to type, "But what if you click on it and")
They: "Or alternatively, it IS real, and you learn really shocking things about our government!"
You: "Damn! SJ;TS!"