Deciding when to skip out to the restroom during a new movie can be tough – you don't want to miss anything crucial. But website RunPee aims to help you know the exact right time to go. The page has time-lines for popular movies, that list suggested points throughout the film when you can leave without missing an important scene. It also tells you how much time you have to get back, and has a scrambled re-cap, that can be revealed and reviewed when you return.

Although it's a useful idea, RunPee uses Flash, which would not make it a good fit for mobile phone usage. As a commenter on Buzzfeed suggested – this would make a killer iPhone app.

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