Having come to represent the concept of 'overwhelming victory', this saying originally came from submarines in WW2 who were able to use torpedoes to literally blow an enemy ship up and out of the water. But is this really possible? And in the Breaking Bad season finale, Walter White took down every single bad guy with a simple crank shaft, remote control and M60. Potential reality or just fiction?

Drone deliveries are on their way. But are those fast-spinning blades just an accident waiting to happen? And is the U-2 really the toughest aircraft in regular use to fly and land?

Jamie and Adam tackle another gruesome story about a pane of glass falling from a construction site and cutting an innocent bystander completely in half from head to toe. Then Jamie builds a Lawnmower From Hell also find out whether a stone shot from a mower can have the same power as a bullet shot from a .357.

Is it as dangerous to use hands free as it is to use a cell phone while driving? Is it really straightforward to drive at high speed in reverse?

Adam and Jamie take aim at Hollywood's infallible hit men and their seemingly supernatural ability to take down a target. First up, can an armed assassin use a single well-placed shot to kill his victim on the other side of a wall? Do interior walls truly provide such little protection, and can you really track an unseen target this way?

Can you hold onto a grenade for longer than two hours? Can you really change a magazine in a blink-and-you-miss-it moment? Can video games make you better at real-life tasks, like golf? And can you really stop a car by using hollow spikes?

Jamie and Adam revisit Jaws' final scene, which they'd taken on in 2005's Exploding Scuba Tank. Will the results be different with a giant anatomically accurate shark and a bigger gun? Then the duo test two repellents: the sound of orcas and essence of "dead shark."

Star Wars provides further fodder when Jamie and Adam see whether high ground really is important in a duel, and whether it's possible to dive out of the way of laser blaster bullets (well, a Stormtroopers', anyway).