Well, at first I totally thought it was air, but then that second part didn't make sense. And then I was like 'What the heck can you put in a barrel to make it lighter, why is this guy a whack job?' but I knew there just had to be an answer so I kept using my brilliance to figure it out and then my mind unleashed an epic beam of DARK VENGEANCE that led me to realize that the answer is...
no subject
A hole- right?! Right?!