Shortly after Brenden mentions adding dogs having sex to his "clean" movie, a brief frame--presumably of humping dogs--flashes on the screen.
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When coach is writing in his journal, the viewer sees him write from left to right. If he is writing the proper way, we should see him go right to left, so that from his perspective he is going from left to right.
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Melissa: Ruth? Who the f*** is Ruth?
Jason: That's you. Ruth the Robot.
Melissa: No, my name's not Ruth. It's Sexy. Sexy O'Sullivan.
Brendon: Why can't we control her?
Jason: Why is she Irish?
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