Take your next party by surprise Darth Maul style.
Step 1: Hardware
First you'll need a paper covered straw an a pair of scissors or something to punch a small hole with.
Step 2: Load Up
Tear a small strip out of the center of your straw.
Step 3: Blowhole
Cut or punch a small hole in the center of your straw/barrel.
Step 4: Arm
Separate the paper sleeves far enough that they still have a good amount of straw still inside, but not close enough to catch on the edges of your mouth.
Step 5: Aim, FIRE!
Put the straw to your lips, place yourself between your two targets and let havoc fly!