You're a projectionist and you're tired and angry, but mostly you're bored so you start by taking a single frame of pornography collected by some other projectionist that you find stashed away in the booth, and you splice this frame of a lunging red penis and a yawning wet vagina closeup into another feature movie.
This is one of those pet adventures, when the dog and cat are left behind by a traveling family and must find their way home. In reel three, just after the dog and cat, who have human voices and talk to each other, have eaten out of a garbage can, there's the flash of an erection.
A single frame in a movie is on the screen for one-sixtieth of a second. Divide a second into sixty equal parts. That's how long the erection is. Towering four stories tall over the popcorn auditorium, slippery red and terrible, and no one sees it.
