* CrossesTheLineTwice: Lawrence and the Arabians are an incredibly un-PC group of amateur singers who play out [[spoiler:Arab stereotypes. Two children are dressed in {{brownface}} and one man is actually dressed as Osama bin Laden]]. Grant reacts with amazement.
* HilariousInHindsight:
** This movie is about [[spoiler:a virus that is spread through words, more specifically, language]]. Cut to 2015, where ''VideoGame/MetalGearSolidVThePhantomPain'' [[spoiler:features a similar virus. The major difference is that it does not turn the infected into [[TechnicallyLivingZombie Technically Living Zombies]], or any other sort of zombie for that matter, at least]].
** Grant posits that he doesn't even believe that UFO's exist. A common talking point is that UFO's do ''technically'' exist -- that is, at their literal terminology, Unidentified Flying Objects. Any flying object that has not been identified is technically a UFO. This is the exact sort of quibbling over "real" meanings of words that Sydney and Grant use to immunize themselves from infection.
* ParanoiaFuel: The film centers around a HatePlague that manifests itself not as viral, bacterial, or fungal, but audible. The words you say aloud may gain lives of their own and try to take over your body.
* {{Squick}}: [[spoiler:Laurel Ann's]] death. She must have vomited at least a pint of blood onto that glass.
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