Top 10 Dumbest Inventions <br /> <br />A car that flies, a bra that doubles up as a golfing green, and a pet you'll need a lot of imagination to play with... there are good reason why these ridiculous inventions can't be found today. Watch the clip to discover the 10 Dumbest Inventions of all time <br /> <br />10. Shiri <br />Shiri is a Japanese mechanical butt that exhibits emotion in response to human touch. <br /> <br />Made from skin-like silicone, it will tense up in fear if hit, and shiver - seemingly in pleasure - if stroked. Internal microphones help Shiri determine how it's being touched, for instance recognising the sound of a slap. <br /> <br /> <br />09. High Five Simulator <br />Described as "a convenient outlet for the release of excitement", this 1990s invention is essentially a spring-loaded arm that will high-five its owner. <br /> <br /> <br />08. Pet Rock <br />When the Pet Rock hit shelves, creator Gary Dahl made $15 million in the first 6 months. <br /> <br />The rocks came in a cardboard carrying case, with air holes and a bed of straw, and included a manual about how to care for and feed the Pet Rocks. 1.5million people snapped up the rocks, ignoring the fact that rocks were widely available on the street for free. <br /> <br /> <br />07. Foot-Powered Bike <br />A bike with neither a saddle nor pedals forces the rider to run at regular intervals between periods of coasting - once they have built up speed. <br /> <br />Created to encourage bike-riding in cities, with the Fliz Bike the 'cyclist' wears a harness around their chest and dangles face down from a metal bar. <br /> <br /> <br />06. Golf Putting Bra <br />A Japanese company designed a bra that can be turned into a mini putting ground, for any women desperate to play a quick game of golf. <br /> <br />Designed with a pocket for extra balls & tees, it also included a speaker that congratulated players on getting a "Nice shot!". Unfortunately the company overlooked the fact that a woman would be left without a bra while she played. <br /> <br /> <br />05. Parachute Jacket <br />French tailor and inventor Franz Reichelt created the Parachute Jacket, which he hoped would eventually be worn by pilots in case of emergency. <br /> <br /> <br />04. Mizar Flying Car <br />Evidently we didn't learn our lesson from Franz, as in 1973 the inventor Henry Smolinski created the flying car. <br /> <br />The invention was actually a Ford Pinto with the wings, engine and tail of an airplane attached. <br /> <br /> <br />03. Fat-Free Potato Chips <br />In 1998 snack company Frito-Lay introduced Wow! A brand of fat-free potato chips. The miracle chips included an ingredient called olestra, a food additive. <br /> <br />It tasted exactly like fat, but was said to contain no calories or cholesterol. However, once eaten, it turned out that the ingredient prevented the body from absorbing nutrients. As a consequence, those who ate them suffered from cramps and diarrhea. <br /> <br /> <br />02. Baby Cage <br />In the 1930s more and more Londoners began to live in tiny apartments in high-rise buildings. With no access to gardens, some parents hung cages from the windows of their apartments and placed their children inside so they could get some fresh air. <br /> <br /> <br />01.The Firebox <br />Created in 1938, the Firebox was an alarm intended to trap pranksters reporting fake fires.
