Tropescilloscope: Hoist by His Own Petard

Defeated by one's own device or plan. (read more at tvtropes.org)

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Laser-Guided Karma Continuity Nod Improbable Weapon User Eyepatch of Power Broken Aesop I Did What I Had to Do Unreliable Narrator Bad "Bad Acting" Karmic Death Fiery Redhead As Long as It Sounds Foreign Red Herring BFG Offscreen Teleportation Shell-Shocked Veteran Author Avatar Deadpan Snarker Rousing Speech The Stinger Expy Pragmatic Villainy Broken Pedestal Spell My Name with an "S" Wham Shot Police Brutality Offscreen Moment of Awesome Biopic Dirty Coward Rule of Cool Death Seeker Costume Porn Off-into-the-Distance Ending Even Bad Men Love Their Mamas Cain and Abel Adaptational Villainy Corrupt Corporate Executive Gender Flip Back from the Dead Film Noir You Have Outlived Your Usefulness Dropped a Bridge on Him Off with His Head! 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I'm a Humanitarian Only in It for the Money Take a Third Option Take That! Pimped-Out Dress The Cameo Smug Snake Affably Evil Evil Cannot Comprehend Good Took a Level in Badass Comically Missing the Point Domestic Abuse Married to the Job Almost Kiss Jump Scare Not So Above It All Male Frontal Nudity Spiritual Successor Bilingual Bonus Killed Mid-Sentence Implacable Man Horror Films Dogged Nice Guy Based on a True Story Small Name, Big Ego folderlabel Demoted to Extra Accidental Misnaming Dissonant Serenity Pun aka: Incredibly Lame Pun Face Death with Dignity Horror Doesn't Settle for Simple Tuesday Scary Black Man Spared by the Adaptation Fire-Forged Friends Sliding Scale of Idealism vs. Cynicism Fatal Flaw Stepford Smiler Colour-Coded for Your Convenience aka: Color Coded For Your Convenience Bloodier and Gorier Animal Title Index Shipper on Deck The '80s Eagleland Recycled IN SPACE! 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A God Am I Romantic Comedy Ghost Fiction Darker and Edgier The Smurfette Principle Casting Gag Vomit Discretion Shot Gorn You Killed My Father Intergenerational Friendship War Is Hell Adaptation Name Change Evil Counterpart The '60s Gratuitous English Guns Akimbo Victoria's Secret Compartment My Beloved Smother Bloody Hilarious Cool Old Lady Punny Name Defrosting Ice Queen Cloudcuckoolander Ms. Fanservice An Axe to Grind Four-Temperament Ensemble Missing Mom Authority Equals Asskicking Crapsack World Rewatch Bonus I Need a Freaking Drink Dirty Old Man Mistaken for Gay Not Even Bothering with the Accent The Bad Guy Wins Fantastic Racism Light Is Not Good Major Injury Underreaction Deus ex Machina Insane Troll Logic The Faceless Screw This, I'm Outta Here! 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Is Serious Business Bland-Name Product Re-Cut Death by Adaptation Bring My Brown Pants Red Right Hand Better to Die than Be Killed Curse Cut Short Historical Hero Upgrade Irony Informed Ability Dark and Troubled Past Dutch Angle Historical-Domain Character Pet the Dog Berserk Button Big Bad Duumvirate Chewing the Scenery Unusual Euphemism Aww, Look! They Really Do Love Each Other Kids Are Cruel Suspiciously Similar Substitute Bar Brawl All There in the Manual Diabolus ex Machina Rape Is a Special Kind of Evil Ambiguously Gay Bald of Evil Evil Laugh Papa Wolf Evil Plan Military and Warfare Films Grievous Bottley Harm Heel Realization 20 Minutes into the Future Film Series Heroic Sacrifice Did Not Get the Girl Retirony There Is No Kill Like Overkill Mexican Standoff Adaptation Expansion Drill Sergeant Nasty Brutal Honesty Hell Is That Noise Framing Device Reasonable Authority Figure Big Eater Hypocrite Facial Horror Arch-Enemy Cool Car Jerkass Has a Point The Power of Love Never My Fault Wicked Cultured Villainous Breakdown She Cleans Up Nicely Mind Screw Everyone Calls Him "Barkeep" Distracted by the Sexy Epic Fail Creative Closing Credits Affectionate Parody The Casanova May–December Romance Heroic BSoD The Smart Guy Very Loosely Based on a True Story Male Gaze Covers Always Lie Would Hit a Girl Mighty Whitey Faking the Dead Martial Arts Movie Meaningful Name Face–Heel Turn Word of God Worthy Opponent Heroes Want Redheads Ripped from the Headlines Hero Antagonist What Happened to the Mouse? Improbable Aiming Skills Lampshade Hanging Punctuated! For! Emphasis! The Film of the Book For the Evulz Setting Update The Chick Room Full of Crazy Batman Gambit Throwing Your Sword Always Works Book-Ends Anti-Hero Peek-a-Boo Corpse Final Girl Fantasy Films Up to Eleven Sequel Hook Lighter and Softer Dramatic Gun Cock Bond One-Liner Evil Is Hammy