You might get jelly if you play on a console.
In just one week, PC and Mac Portal 2 players will get the chance to build their own single and multiplayer puzzles using an in-game editor that will be added with the second batch of DLC, the “Perpetual Testing Initiative." Although there is no word yet on this DLC coming to consoles, the fact that this update comes in the form of an in-game editor should provide some level of optimism for console supporters.