Test out the gun on one of your roommates

After fully inspecting the toy gun and its packages, you start to wonder if this thing, on the slimmest chance, might actually be legit, who should you try it out on first?

"Pssh.. this is obviously some type of prank someone is pulling on me, it'll probably shoot out some Nerf dart or something. I should go show THEM a prank, see how they'll like it!"

You joke to yourself in your head while gripping the gun in your hand smirking. But besides all that, who is going to face the wrath of your so called "toy"?