Basic Trope: Nerdy characters are depicted as sex-obsessed, lecherous, or having deviant sexual preferences.
- Straight: Melvin takes nude photos of Cheryl the cheerleader and tries to steal her underwear.
- Exaggerated:
- Melvin zaps Cheryl and the rest of the cheer team with The Nudifier, a device that he invented himself.
- In Melvin's eyes, nobody's safe from his sexual advances.
- Downplayed: Melvin has a crush on Cheryl, but his eyes always linger in the wrong places when he watches her practice.
- Justified: Nearly everyone Melvin's age has some form of sex drive. Why should he be an exception?
- Subverted: Melvin takes nude photos of Cheryl and tries to steal her underwear... because if he doesn't, Barbaric Bully Jerk Jock Dash Yeong is going to put him in the hospital.
- Double Subverted: Before Melvin brings the photographs to Dash, he uploads them to his online Porn Stash.
- Inverted:
- Melvin is normally too engrossed in his studies to think about sex, and is portrayed as more "innocent" than his classmates.
- Melvin is the one who is constantly creeped on due to being considered effeminate and cute, and he has to avoid getting cat-called, flirted with,or worse, raped by an extremely horny and depraved Dash. He also has to avoid a jealous Cheryl for trying to take Dash.
- Gender Inverted: Every morning Melanie helps herself to anime beefcake.
- Parodied:
- Melvin takes on so much extra homework that it's portrayed like a fetish — whenever he gets another textbook added to the pile, his glasses fog up, and he begins to drool with a Luminescent Blush.
- Melvin is often turned down by many of his peers despite his cute Pretty Boy-esque overall appearance. Even if someone decides to give him some pity sex, Melvin's invariably taking the bottom role.
- Dash hits on Melvin, offering the nerd for a one-night stand, but once the two are ready to get down and dirty, Dash is surprised at best and horrified at worst at how Head-Tiltingly Kinky Melvin could physically be.
- Averted: Melvin is no more or less perverted than anybody else at Troperton High School.
- Defied:
- Melvin is expelled or arrested.
- Lovable Jock Chad Brannigan kicks the crap out of Melvin.
- Melvin resolves to treat women with basic respect and not be a pervert.
- The school's nerd clique doesn't tolerate this behavior and kicks Melvin out
- Zig-Zagged: Melvin's libido tends to oscillate.
- Enforced: "We have some real creeps in our fandom. Let's call them out."
- Lampshaded: ???
- Discussed: ???
- Conversed: ???
- Invoked: ???
- Exploited: The Vamp shows up dressed as a Ms. Fanservice character from Melvin's favorite show in order to manipulate him.
- Played for Laughs:
- There's a Running Gag where Melvin can manage to find a perverted meaning in anything, no matter how innocuous, through a combination of technical jargon and good old Insane Troll Logic.
- Melvin is this, but he's instead trying to creep on boys like Chad and Dash. Depending on their orientation, they might either do two things: If they're straight, beat Melvin up for being an overall creep trying to essentially rape them. If they're gay, give Melvin a little bit of pity sex and try to satiate his lustful tendencies.
- Played for Drama: Melvin sinks into a deep depression because his high sex drive and general unpopularity among his peers means he's not going to be hooking up anytime soon.
- Played for Horror: The nerds attempt to gang-rape Cheryl.
- Implied: Melvin can't stop himself from laughing when he overhears an Innocent Innuendo, much to the confusion of everyone else in the room.