Runpee.com is a website database of movies currently in the theater with notations that let you know when it's a good time to run to the bathroom. As you can see, this is the runpee chart for Terminator Salvation, which features several opportunities to drain your dragon. Of course, some would argue any time is good because the movie sucked. I wouldn't know, I haven't seen it BECAUSE I HAVE ENOUGH TROUBLE SLEEPING ALREADY. Also, I don't like leaving my seat during a movie, so you know what I do? I use a catheter. Except I definitely don't because I would pass out from the thought before I even had my pants down. Which is why the last movie I saw in the theater was Cars. Not even kidding.
Thanks to Randi, who just asks for an empty cup from the concession stand.