but how does it work in detail? can someone give me an example? like they were explaining it to a 5 year old? lol.

You go find a guy with a shaved head, biceps like semi-trailers and tattoos all over his arms legs and half his face. You borrow a bunch of money off him with your house, your car, your wife, children and kneecaps as collateral then you walk into a casino and up to the roulette wheel and put it all on black. Then the slim rich guy with the pointy goatee quits stroking his cat for a second and picks up the ball and puts it on "0"