LOL, this happend to me a while ago..
 

You know when you tp to somebody, and take out your cutlass or whatever, it goes back in your case right away. So I tp'd to a friend on a ship, must've pushed shift on accident, and when my screen loaded it showed the cannon ammo. So I was like ok, nothing special. I clicked and it shot! LOL
Idk how I did this but it was pretty cool!

Lol thats awesome i can see it now! THE HUMAN CANNON!

LOL that's true!
Mr.Human Cannon!

Oh yeah, and I could walk around on the ship, but I couldnt aim it :( oh well

I dont get it?

Ok, so you know when you tp to somebody and sometimes you take out a weapon, then when it loads that weapon is taken out but then put away, and you have to take it out again.

Well, I did that but was on a ship, and must've pushed shift near a cannon, and it puts it away...well you can't put a cannon away in your pocket! So somehow it glitched and I walked around on the ship and when I clicked I was able to shoot the cannon, but not aim :(
Get it now?

Ahh lol a Hand cannon heh heh.

Yeah.. some magical voodoo powers! I own.

The only hand cannon I know of is the pistol, as Barbossa says.

Yep that's a glitch. A rare one at that but it must have been weird.

I wonder what kind of power that packs.

Typing different numbers change the ammo type? If you type "8" do you shoot grapple hooks?

lol human cannon?

Yeah, cuz I shot fire out lol. I didnt do grapplers though, but im 99.9% sure it allows you to!