- Angst? What Angst?: Less than a month after his girlfriend gets killed by a monster, Hank returns to the very beach she died on and comments to a band member "pretty dead tonight, huh, Ron?"note
- Ron even notes how things have gotten dull since Tina was killed. And not in a mournful way, either.
- Elaine is fretting about being attracted to Hank, but feels guilty since it's because Tina is dead. Her father urges her to go after him - and does this while Elaine is going to her funeral.
- Awesome Music: The Del Aires were a moderately successful New Jersey-based band. In the MST3K season episode guide, the Brains briefly stopped ripping on the turkey of a film to mention that The Del-Aires are really pretty good.
- Designated Hero: Hank. He's a guy who hates fun, for some reason about being too old. (I'll say.) The fight on the beach is caused by his girlfriend's flirting...you know, the girlfriend he pretty much broke up with not just five minute ago. He actually starts the fight, and comes close to actually killing the lead biker by strangling him. The people helping in the fight had to pull him off, and then he tries to break free, like he was a deranged criminal. He also couldn't be bothered to go get some sodium to fight and kill some monsters that have been murdering women left and right.
- Ensemble Darkhorse: Eulabelle. She's the only character to have any sort of personality, which happens to be quite lovable, and she's the character who really contributes most to moving the plot along: first by discovering that sodium can kill the monsters, and then by persuading Hank to get off his white-bread ass and go track down some sodium.
- Fair for Its Day: Eulabelle's characterization is based off the very dated "mammy" archetype, with a few silly superstitions thrown in for good measure. However, she's also the only person who actually moves the slow plot along and comes across as the smartest person in it in her efforts to do so.
- Fetish Retardant: The "young people" on the beach dancing... and dancing... dancing... Well, except for the inexplicable hot Romulan girl.
- Harsher in Hindsight: Wonder why the Del-Aires didn't make it big?
On the night of August 25, 1963, the Del-Aires were just wrapping up a very raucous set at the Angel Lounge in Lodi, New Jersey, when two police officers arrived at the club to investigate a noise complaint. Unfortunately, two career criminals – Thomas Trantino and Frank Falco – happened to be at the club celebrating a successful heist they’d pulled earlier that day. Sgt. Peter Voto entered the bar first while his partner waited in the patrol car; he was immediately ambushed by the pair and ordered to remove his clothes. A few minutes later, Voto’s partner Gary Tedesco – an unarmed probationary officer – came inside to see why Voto hadn’t returned; he was likewise taken hostage and ordered to strip. Trantino and Falco then shot the helpless kneeling police officers in the head, killing them both. Falco was shot by police a few days later while resisting arrest and Trantino gave himself up. The Del-Aires disbanded shortly afterward due to “creative differences.”
- It's Not Supposed to Win Oscars: Del Tenney's response to those who criticized it. He wasn't trying to make high art; he just wanted to make a movie that would make money (which it did) and have fun doing it. To that end, he succeeded.
- Nightmare Retardant: Any attempt at horror is lost by the monsters' incredibly silly designs. To say nothing of the quality of the costumes.
- Padding: After the revelation that elemental sodium can kill the creatures, the movie goes into a long segment of the scientists trying to figure out how to find the creatures, where to get the sodium, and other tedious minutiae that drags out a long time and probably should have been cut.
- Special Effects Failure: The eponymous Horrors look like some strange combination of fish, frog, and hapless actor in a bad suit. The mysterious tubes resembling pickles that jut out of their mouths are more baffling than intimidating, and even with these drawbacks, the film still manages to screw up the costume on a few occasions.
- What An Idiot: When the scientist finally guesses where the monsters' lair is:
Dr. Gavin: Fingal's Quarry? Good God, why didn't I think of that before! It's the deepest body of water around here, and it's right near where those three girls were killed.
- Hank is ready to give up on finding enough sodium to effectively fight back when he hasn't even finished going down the list of chemical suppliers in the phonebook. The next one he calls has it, naturally.
- WTH, Costuming Department?: The monster suits in general are rough, but the sausage-mouths are particularly bad — the actors inside were forced to paw their victims, since there was no clear way they could bite them, and what function they serve (scrubbing villi?) is left to the viewer's imagination. Even the producers apparently realized how absurd they were after shooting; both the theatrical poster◊ and comic adaptation instead depict the Horrors as having fangs, with the latter touching up film stills just to hide them◊.