After a one-night stand gone horribly awry, high school student Jeremy Capello finds himself one of the undead. (Sort of...) Now he must come to terms with being a vampire while trying to get a date with the girl of his (literal) dreams. Oh, and it doesn't help that there are a couple of vampire hunters in the neighborhood...

A lighthearted 1980s teen comedy with all the silliness one would expect thereof.

!!Tropes used:
* AllGuysWantCheerleaders: subverted -- Jeremy ignores cheerleader Candy's obvious interest in him to go after Darla.
* AlternateHistory: Modoc informs Jeremy that one the the US Presidents was a vampire.
* BeautifulAllAlong: Darla, the band nerd.
* CaptainObvious: [=McCarthy=] tests Ralph with garlic and crosses to prove that he's a vampire, and Ralph passes, showing that he's human. So [=McCarthy=] suggests stabbing Ralph in the heart with a stake, and if he dies, he's a vampire, right?
-->'''Jeremy:''' "A stake through the heart would kill ''anybody''."
* CasanovaWannabe: Jeremy's friend Ralph.
* CrypticBackgroundReference: After Modoc [[NoSell shrugs off]] the silver bullets, Modoc confirms that werewolves exist.
* DreamSequence: At the beginning of the film, Jeremy has a particularly bizarre dream involving the girl's locker room, Darla and a nun with a [[GroinAttack pair of giant shears...]]
* TheEighties: The film was made in 1988.
* FemmeFatale: Nora.
* FriendlyNeighborhoodVampires: Modoc and Jeremy.
* HeelFaceTurn: [[spoiler:Professor [=McCarthy=] at the end, after getting om-nom-nom-nominated by the other vampires.]]
* KnightTemplar: Professor [=McCarthy=], who believes that vampires are TheVirus and must be stopped lest there be a [[ZombieApocalypse Vampire Apocalypse]]. Even as Jeremy explains that vampires aren't what he thinks and spares his life, he keeps trying to kill him. He finally stops after being made into one.
** After failing to kill Modoc with silver bullets, he then thinks he can kill centuries-old Modoc with his bare hands. This is right after Jeremy (who's been a vampire for less than a week) has completely disarmed him and lifted him into the air like he was made of feathers.
* {{Masquerade}}: Apparently the butcher industry is well aware of the existence of vampires, and provides their sustenance.
* MarketBasedTitle: The ever-more-appropriate ''I Was A Teenage Vampire'' in non-US markets.
* MeaningfulName: "[=McCarthy=]" can't be an accident, considering how the professor talks about how those commies - er, vampires - are gonna get us if they aren't stopped RIGHT NOW, and his willingness to kill people who only ''might'' be vampires.
* MistakenForGay: Jeremy's parents conclude from his odd behavior and other strange goings-on that their son is gay.
** In one version for broadcast TV, they thought he was just [[DrugsAreBad on drugs]].
*** Must have lead to one hell of a WarpedAesop at the end. "It's okay to do drugs if you have a girlfriend." Or, less oddly, "The behavior of having a new girlfriend can be mistaken for being on drugs."
* NotEvenBotheringWithTheAccent: An extreme case in that the story is set in Texas, but ''nobody'' in the cast has a Texan accent.
* OrdinaryHighschoolStudent: Jeremy.
* OurVampiresAreDifferent: While "undead" vampires can't go out in the sun, "living" vampires (like Jeremy and Modoc) are at most slightly annoyed by it. (This concept has roots in traditional Romanian folklore.) They do actually age, albeit slowly - the equivalent of one human year per decade. They also have some mind-control abilities and can transform into wolves. Crosses also seem to have no effect.
** Professor McCarthy seems to think that vampires have a weakness to silver. He's incorrect.
* SupernaturalAngst: Jeremy is distraught at the thoughts of being a teenager for the next twenty years. Fortunately, he gets over it rather quickly.
-->'''Modoc:''' "Please tell me you're not going to sulk for the next twenty years."
-->'''Jeremy:''' "No, but I think I'm entitled to a few minutes."
* VampiresHateGarlic: Unfortunately true for living vampires. Much to the distress of Jeremy, who loved it. It gives him away at the end when he hugs Ralph while Ralph has on a garlic garland and recoils in pain.
* VanHelsingHateCrimes
* VegetarianVampire: Blood is bought at butcher shops. Modoc suggests pig's blood, B negative, to Jeremy. The butcher Jeremy goes to seems to be well aware of what he is and teases him about it being his first time.
* WhatDoesSheSeeInHim: Both genders do this, with Ralph and Gloria equally bewildered by respective friends Jeremy and Darla's attraction to each other.