Ah, sorry. I assumed everyone was familiar with the term. Tl;dr is the "Too long; didn't read" section, where the poster summarizes the post for those who don't feel like reading the wall of text. In the tl;dr on this post I mentioned that I'm just trying to point out that a lot of us pretty much had the Jellohorn fall in our laps, which exposes a major flaw in the "RNG is earning and Xûr isn't" argument.