9 Self-Defense Gadgets Your Mugger Will Find Hilarious

Technology has always been about making the world a better place: one with less of your enemies in it. Jet engines, computers and radar were invented by geniuses in wartime, but we're looking at the inventions of idiots during peacetime, and the result is more ridiculously contrived self-defense systems than Jackie Chan's career. Some were so stupid they weren't even given patents, and the US patent office has given patents to a stick and a vaginal bong. Unfortunately, neither was a euphemism.

Inventions don't grow on... huh.
The Self-Defense Memo Pad
Patent Number: 5,823,572

Violence and memos really don't go together. While the confusing series of numbered features wants us to believe that the mugger's eye is somehow part of the invention, the only difference between this and a handful of Post-Its is the carved handholds in the side of the pages. Meaning it's not only useless as a weapon, it's actually counter productive as a notepad, assuming you don't want everyone you leave a note for to know they can just beat you up. The patent also suggests that the memos are useful for jotting down a description of your attacker, which is so likely, we're surprised they don't suggest that you also sketch the criminal's getaway unicorn.When It Would Work: If you can convince the mugger to pose like the one in the drawing, including not having a body, you might be OK. But if your enemy gives you unfettered access to their face and you still need extra weapons to win, you're probably screwed. So really, the only way this pad could defend you from attack is if you wrote down your PIN number and handed it over with your wallet.
Revolver Flick-Bayonet

Drug Detecting Stir Stick

(Barely) Stabbing Ring


Quick, pop the big red weak point! To trigger the tiny blade you need to twist a release lever on the back with your other hand. You're using your entire upper body to deploy less stabbing power than a loose carpet staple. It's the equivalent of sending an aircraft carrier to deploy a single jeep. A jeep carrying a jousting lance in a world where chemical weapons, electric blasters, and actual guns all exist.When It Would Work: You'd have to target weak points. The two millimeter clearance of the spring-loaded blade could maybe scratch someone's eyeball, assuming you deployed it while your fingers were already gouging it out. And you punch through their skull to grab and twist the release lever with your other hand. Then you could totally maybe damage one of the corpse's eyes a bit, at which point you're only really being a dick to potential donor recipients.
The Key-Whip!


The rope also changes length in every picture Whipping a keyring is exactly the kind of weapon an eight-year-old would imagine when he first discovers ninjas, Indiana Jones, and doodling. This attack has less basis in physics than a voodoo curse. The only way you could do less damage is if you were swinging a keyring into someone's sternum while
Log Purse
Patent Application Number:11/200,493

When your patent spends a page identifying a chunk of wood, you might not be "inventing." The patent text is missing words, commas, and entire subclauses, but since the inventor is clearly missing entire chromosomes we won't mock that too hard. She desperately wants her idea to look clever; a task neither her nor her idea is equal to. She describes a log as a "natural cylindrical elongated section of a natural growing tree," and uses more words to describe hollowing it than most scientists use to describe quantum theory. She doesn't really understand the patent process, but fifteen pages into a patent for wood that shouldn't surprise anyone. The method section includes detailed descriptions of how to attach Forstner bits to your drill using a chuck key, not realizing that when things already have people's names like that, they've probably already been invented. When It Would Work: Stupid as it is, it's he only thing on this list which would actually work. Carrying around a hollowed-out tree on a strap clearly s that you don't have any money and are far too crazy to risk attacking. Except by bears, who'll want to steal the nuts and berries you carry instead of currency. It also really would work as a bludgeon. So it's a pity that this patent can never be granted because of prior art by Wilma Flintstone.
The Throttlin' Strap


It's also the perfect length to get soaked with piss at the urinal, adding +1 Poison damage When attacked you insert your free hand through the loop and pull it across the enemy's throat. Apparently the designer hasn't heard of wires. Either that or he considers garrotes to be wimpy, and is therefore too dangerous to be trusted with anything as sharp as the pen he used to draw the worryingly detailed interior views of the neck. That's what you'd see it if you decapitated someone. And since this man doesn't believe in technology more advanced than tanned animal hides, it must have taken a long time to saw through someone's neck with a strip of leather.When It Would Work: Never. A big part of successfully strangling someone is not advertising that you're going to do that, while getting a few inches of wristbelt around your enemy's throat requires more co-operation from your enemy than WWE. You'd have a better chance of landing a spinning piledriver. Despite this the patent insanely describes this as an ideal weapon for anyone regardless of size or strength, and particularly points out that it's better than mace or pepper spray for someone smaller or weaker than their assailant. But then, this is a man whose response to attack is to tying his own hands together and LUNGE! He probably considers leaving your legs free as easy mode.
Bat'leth Shopping Bag Handle

Plowgun


Guess who'd win in a fight. Or anything else.
When It Would Work:This is for someone sowing rows of plants and expecting to be attacked in a straight line from dead ahead, so it's a tragedy it was patented 150 years before Plants vs Zombies.

For more self-defense systems which get their owners the beatings they deserve, check out The 13 Most Irresponsible Self-Defense Gadgets Money Can Buy. If you've given up on gimmicks and want to turn your body into a weapon, read 5 Insane Fighting Manuals (You Probably Shouldn't Listen To).
Luke McKinney's main self-defense strategies are friendliness, buying drinks, and Down-forward-HK into EX Thousand Foot Kick. He also tumbles and has a website.