Date Rape

"Come on, Babe, it's your lucky day Shut your mouth, we're gonna do it my way ''C'mon, Baby, don't you be afraid If it wasn't for Date Rape, I'd never get laid!"

- Sublime, of course.

This trope (which is sadly common in real life, reflected in fiction), is Exactly What It Says on the Tin. A woman, or more rarely a man, is out on a date with a person who seems nice and normal... until they force themselves on the victim, either by drugs or by violence.

See also Date Rape Averted for when a hero steps in.

Film

 * Happened to the protagonist of the first Trilogy of Terror segment.
 * This fuels the plot of the Left In Darkness movie, where the young girl Cecilia is given a cup with drugged beer and raped, however she dies shortly after her dose and wakes up in limbo. At one point in the movie she does manage to knock a cup of drugged beer away from her friend despite being in limbo.

Literature

 * Swordspoint: In The Privilege of the Sword, Artemisia Fitz Levi goes to a somewhat disreputable ball with her fiance, they end up in a secluded corner, and before she knows what's happening enough to protest, he's taking her virginity. He doesn't seem to consider this rape at all, and blames her for the fact that it even happened.
 * Not a "date" in the usual sense, but this happens to in Pillars of Creation, the seventh book in the Sword of Truth series. Her inner monologue makes it clear she isn't at all comfortable with what her suitor is doing, but she's unable to bring herself to stop him.

Live Action TV

 * Veronica Mars: Veronica is roofied during a frat party and raped by someone present (she doesn't find out who for quite a long time).
 * A violent, rather than drugged, example would have happened in Heroes if  had succeeded in raping Claire before accidentally killing her. It is also very heavily implied that he is a serial date rapist, who covers himself by spreading rumours about how his victims are sluts.

Manga and Anime

 * A disturbingly large amount of Hentai manga and dōjinshi plots. Often employs Victim Falls For Rapist and "It's Not Rape If You Enjoyed It".
 * An episode of Hell Girl dealt with a boy who learned that the girl he had a crush on was about to be roofied and raped by her boyfriend and another guy. The boy goes to Hell Girl to send the rapists to hell but is ultimately rejected and the girl is raped.

Music

 * Sublime's "Date Rape", a fast-paced and cheery song about a guy who practices date rape, gets arrested, and then suffers Prison Rape.
 * Warren Zevon's "Excitable Boy" includes the verse "He took little Suzie to the Junior Prom / Then he raped her and killed her, then he took her home".

Web Original

 * The Nostalgia Critic got roofied and raped on his prom night. Played for Laughs, obviously, but has he ever given us happy backstory?
 * On her in-character facebook, The Nostalgia Chick finally got a date with Todd in the Shadows. Most people would feel bad if their crush drank the night away and ignored them (which he did), but she was just excited about his judgment being blurred.