Transporter room

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: For a less scatological approach to this topic, see Transporter.
The transporter room was a room that served no purpose at all. The redshirts told everybody that they transport the person's particles from one place to another, but what they actually do is they vaporize the person, turning him into powder. Then, they take a cannon and shoot them to the other ship. Also, the transporter room has been used for pooping and peeing, since there are typically no bathrooms on a real starship.