THX

THX is a real-life sound system used for several movies. The Deep Note is so loud it caused the room to shake, the fire exit sign to be smashed and a person's head to explode. When it was over, people were cheering, unlike Grandpa, who asked to turn it up. 
== Appearances ==
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==Trivia==
*The Deep Note is the exact same as in the other THX trailers.
*THX executives liked the scene so much, that it was re-animated in widescreen and used as an official THX trailer in movie theatres.
*The blue rectangle was shown before the trailer begins was only used in the official THX trailer in movie theaters.
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