A sextuple-barrelled shotgun that fires other shotguns from each barrel that then turn into giant dragons with miniguns that fire grenades in their mouths with six arms. Two of the arms are holding katanas (because katanas are just better), two are holding chainsaws and on three of the dragons they're playing musical instruments - electric guitar on rhythm, drums and bass guitar, with a fourth dragon singing lead. The two other dragons then turn into a giant stage complete with lighting and several thousand amplifiers.
You find yourself on top of this stage wielding the most badass guitar ever to exist. You don't know how to play it, but you know for sure that that one guitar feels good in your hands. It doesn't take long to understand that that one guitar, slung way down low, is a one way ticket, just one way to go. You then play the single most incredible rock guitar solo ever to exist while your enemies just look on in awe at the incredible event unfolding before their eyes.
Then everything fades out, but you don't stop playing. You're standing on top of a galaxy and all the other galaxies in the universe are spinning around you and flashing wildly, creating the most incredible light show ever to be seen by anything, ever. Then all the galaxies rush towards you as you finish the solo, and they all explode outwards again. It's as though you're experiencing the big bang.
You find yourself standing where you were before it all happened. The guys who you attacked are lying dead with their heads exploded into tiny chunks. You reach down for the guitar, but it's turned back into the shotgun. Adjusting it so it's slung over your shoulder, you walk off into the sunset, and your genitals are now four inches larger than they were before.