Obi-Wan must have a pretty good saving throw in the movie to avoid getting even slightly singed by that torpedo Jango fires at him. And a backpack-mounted torpedo that fires straight up behind your head is the sort of bizarre weapon a real roleplayer would use. It's probably called a Bohemian ear-torpedo or something.

Transcript

{the fight between Obi-Wan and Jango Fett continues}
[SFX]: Whooosh! {Jango flies up to a tower on the landing platform}
Jango Fett: Did you notice the scars on my face earlier?
Jango Fett: Where do you think I got those?
[SFX]: K-chshoow! {Jango fires a torpedo at Obi-Wan}
[SFX]: Whooomph!! {it explodes, knocking Obi-Wan flying}
Obi-Wan: Someone beat you up as a kid?
[SFX]: Tschooooo... {Jango launches himself at Obi-Wan}
Jango Fett: I was on the Trade Federation orbital headquarters at Naboo, when your pitiful little band blew it up.
Obi-Wan: So, you were with the bad guys?
Jango Fett: I was a Republic spy, working with Darth Maul for Senator Palpatine.
Jango Fett: I was on your side!
Obi-Wan: Oops.