Moviegoers, here’s your restroom cue

Just when you thought the Internet provided every possible information service, along comes Runpee.com.

The website lists current movies in theaters, and suggests points in the action during which you could quickly run to the restroom without missing anything substantial.

For example, let’s say you’re watching “Harry Potter and the Half-Blood Prince” and feeling the need. Runpee (which almost sounds like the name of a character in the movie) suggests that you hold on until minute 33, at which point “Dumbledore says, ‘Off to bed, pip-pip.’ ”

Or, the site suggests, you could wait until 1 hour and 47 minutes, when “Harry invites Professor Slughorn to go and see Hagrid with him.”

Those are your cues to head for the head. Later, if you want to check out what happened during either of those scenes, you can click to unscramble a synopsis of the next few minutes.

There are also suggested restroom break times currently on the site for “Funny People,” “Bruno,” “Transformers: Revenge of the Fallen” and several more.

If you don’t plan ahead, it would of course be inconvenient to carry a laptop into a theater and hope for wi-fi. But no worries, Runpee has an iPhone app.

And the creator of the site, Dan Florio, says on Runpee’s frequently asked questions section that he’s working on adaptations for other cellphones.

The site does not display much commercial support. There are a few Google-generated ads and a bit of merchandising, including T-shirts and coffee mugs inscribed with the Runpee logo.

Let’s just hope Runpee doesn’t get too popular. Otherwise there would be a mass run to the restrooms right at the point in “Land of the Lost” when Dr. Marshall talks to the space lizard. That is, if anyone gets that far into the movie.

If nature calls in an empty theater, does anyone hear it?

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david.colker@latimes.com